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Coastcom D/I Mux III System User Manual Download Page 88

Chapter 3. Installation 

68 

Each 50-pin connector has two sets of pins for each line card slot, Channel A and Channel B.  2-
Wire voice cards require the T and R connections.  4-Wire voice cards require T, R, T1, and R1 
connections.  E&M signalling requires the addition of the E&M connections. 

Tables on the following pages give detailed instructions connections appropriate for the 8-, 12-, 
and 24-slot D/I Mux III shelf models.  Make the connections to the 50-pin connectors according to 
Tables 3-9 and 3-10.  Table 3-11 shows the color coding for the 50-pin connector.  (For more 
information on connector pinouts, refer to 

Appendix E.  Wiring and Cable Tables

.) 

Table 3-9.  50-Pin Connector Pin-Outs 

for the 8- and 12-Slot Shelves 

Card Slot 

Channel A 

Channel B 

 

R & T

 

R1 & T1

 

M & E

 

R & T

 

R1 & T1

 

M & E

 

1 

P1 - 1/26 

P2 - 1/26 

P3 - 1/26 

P1 - 13/38 

P2 - 13/38 

P3 - 13/38 

2 

P1 - 2/27 

P2 - 2/27 

P3 - 2/27 

P1 - 14/39 

P2 - 14/39 

P3 - 14/39 

3 

P1 - 3/28 

P2 - 3/28 

P3 - 3/28 

P1 - 15/40 

P2 - 15/40 

P3 - 15/40 

4 

P1 - 4/29 

P2 - 4/29 

P3 - 4/29 

P1 - 16/41 

P2 - 16/41 

P3 - 16/41 

5 

P1 - 5/30 

P2 - 5/30 

P3 - 5/30 

P1 - 17/42 

P2 - 17/42 

P3 - 17/42 

6 

P1 - 6/31 

P2 - 6/31 

P3 - 6/31 

P1 - 18/43 

P2 - 18/43 

P3 - 18/43 

7 

P1 - 7/32 

P2 - 7/32 

P3 - 7/32 

P1 - 19/44 

P2 - 19/44 

P3 - 19/44 

8 

P1 - 8/33 

P2 - 8/33 

P3 - 8/33 

P1 - 20/45 

P2 - 20/45 

P3 - 20/45 

9 

P1 - 9/34 

P2 - 9/34 

P3 - 9/34 

P1 - 21/46 

P2 - 21/46 

P3 - 21/46 

10 

P1 - 10/35 

P2 - 10/35 

P3 - 10/35 

P1 - 22/47 

P2 - 22/47 

P3 - 22/47 

11 

P1 - 11/36 

P2 - 11/36 

P3 - 11/36 

P1 - 23/48 

P2 - 23/48 

P3 - 23/48 

12 

P1 - 12/37 

P2 - 12/37 

P3 - 12/37 

P1 - 24/49 

P2 - 24/49 

P3 - 24/49 

Summary of Contents for D/I Mux III System

Page 1: ...D I Mux III System For D I Mux III Shelf and Common Equipment USER S MANUAL 30000 100 MOD Issue C November 2005 ...

Page 2: ... System User s Manual DATE ISSUE ECO NO REASON FOR CHANGE Aug 1997 A Combine CCU and AMCU Add new standard LIUs Add FLIU Revise to Feature Group upgrade February 2002 B 302 267 Delete FLIU Appendix Add new warranty page New cover November 2005 C Add new Power Supplies and Ringing Generator ...

Page 3: ...llowing two new units replace part numbers 30338 102 30315 105A 30338 103A and 30308 102A 30338 902 Power Supply 48 VDC Redundant The 30338 902 is a DC to DC converter used to power D I Mux equipment from an external 48 VDC input supply Generates 12 and 5 volt outputs as well as failure alarm signals Also provides primary 48v power fusing Can be used in a redundant or load sharing configuration wh...

Page 4: ...f the three locations it automatically configures itself to operate It can be installed or removed while the shelf is in operation hot swapped When installed in the UCOM location the accessory 30333 101 UC cable must be in place on the back of the shelf to complete installation Installation of 30333 101 UC cable Note this cable is installed only when the Ring Generator is located in the UCOM FDLP ...

Page 5: ...age Be sure to securely ground all equipment using common ringing voltage to the common ground connection on the D I Mux III shelf that houses the Ring Generator Care should be exercised to keep the total continuous ringing load at or below the specified 15 watt capability Attention should also be paid to overall loading if an internal AC DC power supply is installed in the shelf with the 30333 10...

Page 6: ...a D I Mux III With the addition of Coastcom s 5 port Subrate Data Multiplexer SDM line cards up to 120 data circuits are supported in a single multiplexer Special features of the D I Mux III are its network compatibility remote control capability integral T1 channel service unit and standard copper wire Line Interface Units LIU Also AC power supply with ringer redundant DC power supply option and ...

Page 7: ...ies with applicable sections of AT T publications 43801 54018 54075 62310 and 62411 Complies with applicable sections of ANSI publications T1 403 and T1 107 Complies with regulatory standards FCC Part 15 Subpart B Class A FCC Part 68 DOC CS 03 UL CSA standards certified by CSA Copyright 1997 by Coastcom All Rights Reserved Printed in the United States of America No Coastcom document or parts there...

Page 8: ...d Modes of Operation Applications Installation Configuration and Operation Diagnostics Appendices Coastcom recommends a thorough review of the content and organization of this manual An extensive table of contents provides easy access to installation and maintenance information At each step of the installation process applicable procedures should be re read carefully to ensure that the required to...

Page 9: ...phone company procedures prohibit connection of customer provided equipment to telephone company provided coin service central office implemented systems Connection to party line service is subject to state tariffs The applicable state public service commission should be contacted for information The telephone company may require disconnection of the user provided equipment in the event of a natur...

Page 10: ...e E M Type I RJ2GX 9 0F TL31E 4 Wire E M Type II RJ2HX 9 0F TL32E OPS Class C RJ21X 9 0F OL13C T1 D4 Framing RJ48C 6 0P 04DU9 B T1 ESF Framing RJ48C 6 0P 04DU9 C OCUDP RJ48S 6 0P 04DU5 56 Integral CSU D4 Framing RJ48C 6 0P 04DU9 B Integral CSU ESF Framing RJ48C 6 0P 04DU9 C Dual 4 Wire Deluxe RJ2GX 9 0F TL31E Dual 4 Wire Deluxe RJ2HX 9 0F TL32E Tandem T1 Unit N A 6 0P 04DU9 BN Tandem T1 Unit N A 6...

Page 11: ...nce notice is not practical notice will be given as soon as possible The telephone company will also advise of the right to file a complaint with the FCC The telephone company may make changes in its facilities equipment operations or procedures that could affect the proper operation of user equipment Advance notice of changes should be given by the telephone company to provide an opportunity to m...

Page 12: ...ll operate to the user s satisfaction Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified con...

Page 13: ...ties 1 D I Mux III Functions 2 D I Mux III Features 2 D I Mux III Software Control 3 Network Communications Controller Error Bookmark not defined Remote Control with NCC 4 SNMP 4 Serial Line Internet Protocol SLIP 6 Gateway 7 Transmission Control 7 Transmission Channel Assignments 8 Maps 8 Timing and Clock Source 9 Alarms and Monitoring 9 Power Failure Alarm 10 Alarm LED Indicators Alarm Cut off a...

Page 14: ...ocal Timing 37 Drop and Insert Operation 38 Recovered Timing 38 Dual Channel Bank Operation 38 Loop Timing 39 Local Timing 39 CHAPTER 2 APPLICATIONS 40 Channel Bank 40 Point to Public Network 40 Point to Point Private Network 41 Drop and Insert 43 Sharing Switch and FXS Applications 43 Dropping Data Polled Data Network 43 Dual Channel Bank 44 Voice Video and Special Services Networks 44 CHAPTER 3 ...

Page 15: ... Cards From Shelf 75 Strobe Units 77 Common Control Unit 78 Advanced Multiplexer Control Unit AMCU 79 Line Interface Units 84 T1 Interfaces 86 Power Supply 90 Heat Considerations 90 48 V DC Power Unit P N 30338 102 and 30338 902 93 110 V AC Power Unit 95 Smart 110 V AC Power Supply 97 Transmission Connection 99 Cable 99 Line Card Installation 100 System Power Up and Initialization 100 Configuring ...

Page 16: ...Mask 130 OD Operate Diagnostics Menu 132 OL Operate Line Card Diagnostics Menu 133 PM FDL Monitor 135 Q Quit Command 136 RM Removing the Manager 136 RP Removing Erasing Passwords 137 SB Setting the Error Rate 137 SC Setting Shelf Configuration 139 SL Setting Line Card Configuration 144 SM Setting Editing a Map Matrix 145 SN Setting the Working Map 148 SO Setting the Communications Configuration 14...

Page 17: ...nk Normal Operation 179 Channel Bank Bypass 180 Channel Bank Line Loopback 181 Channel Bank Payload Loopback 182 Drop and Insert Normal Operation 183 Drop and Insert Bypass 184 Drop and Insert Line Loopback 185 Drop and Insert Payload Loopback 188 Dual Channel Bank Normal Operation 190 Dual Channel Bank Bypass 190 Dual Channel Bank Line Loopback 191 Dual Channel Bank Payload Loopback 194 Software ...

Page 18: ...D OBJECTS 226 APPENDIX G MODEM INTERFACES 246 General Modem Operation 246 Hayes Command Set 246 Special Coastcom Characters 246 NCC Characters 246 D I Mux III Characters 247 DXC II Characters 247 Hayes 1200 and 1200B Command Sets 250 Smartmodem 2400 2400B Command Set 251 V Series Commands 254 Modem Considerations 257 Line Noise 257 Command Timing 257 Modem To Modem Sequencing 257 Modem Control Lin...

Page 19: ...de With Modem Dial Out Disabled 274 Feature Group 6 0 6 2 Screen Changes 274 Displaying Modem and Port Expander Information 276 Feature Group 6 0 6 2 Screen Changes 277 Configuring the Modem 278 Displaying New Modem Configuration 280 Configuring the Port Expander 281 Displaying New Port Expander Configuration 283 Quitting Alarm Reporting Configuration 284 APPENDIX I TRAPS AND MODEM DIAL OUT CONFIG...

Page 20: ......

Page 21: ... DS1 are referred to as DS0s D I Mux III Capabilities Coastcom s D I Mux III family of intelligent T1 multiplexers offers fully programmable easy to use software controlled voice and data multiplexing One or two T1 digital transmission systems are easily accessed with a D I Mux III Voice data and special service circuits are all available within one compact system The D I Mux III supplies 48 DS0 t...

Page 22: ...figuration and quick response to changing network conditions Software control and configuration Automatic alarm notification Eight preconfigured maps for easy reconfiguration of the DS0 transmission channels Time event manual and alarm control of maps alarm map control requires Feature Group X 4 or higher Selectable timing sources Real time alarm reporting and recording Alarm LED indicators Extern...

Page 23: ...t tool was designed in support of our AIM and D I Mux III product lines empowering the user to set up configure view and manage an entire mixed network from a single location Simple point and click navigation alleviates the need for highly trained technicians to manage your networks and reduces costly travel time to remote sites for maintenance For D I Mux requires an AMCU controller card See sepa...

Page 24: ...trol Via AMCU SNMP Advances in internetworking during the 1980s forced the definition of a new network management standard creating the Simple Network Management Protocol SNMP the most widely used market standard to date The optional Advanced Multiplexer Control Unit AMCU provides the SNMP option by adding networking capability to an enhanced modular version of the CCU card SNMP provides a set of ...

Page 25: ...rket standard for Transmission Control Protocol Internet Protocol TCP IP based environments Coastcom implements SNMP using a powerful AMCU that offers the following features Native SNMP that eliminates the need for proxy hardware Support of Management Information Base 2 MIB2 and DS1 MIB Intel i960 RISC processor based AMCU speeds data processing Local serial interface allows programming of the uni...

Page 26: ...r or other suitable network device by any means appropriate for a serial connection The router must be configured for a SLIP connection While a serial network connection is significantly slower than an Ethernet connection it is more flexible The serial link can be carried by a D I Mux Subrate Data Multiplexer SDM channel or in any of a number of other ways in addition to a direct cable connection ...

Page 27: ...tions interconnection method within North America Local Exchange carriers such as Pacific Bell and Southwest Bell etc also offer this service for private networks The T1 signal is based upon what are known as DS1 Frame and DS1 Extended Super Frame ESF Simply defined the DS 1 ESF scheme is as follows DS0 Data Signal Unframed continuous bit stream at a rate of 64 Kbps DS0 Octet Eight consecutive bit...

Page 28: ...the 24 DS0 transmission time slots Mapping is controlled by software stored in the Common Control Unit CCU Up to seven maps can be stored with the map currently operating called the working map A map change alters the circuit to time slot assignments By changing to a new working map the system is able to change time slot assignments without causing data errors on unchanged DS0s Maps are set to sta...

Page 29: ...arm detection is provided for both the T1 1 and T1 2 transmission lines Common Bell System alarms as follows are supported Local alarm Remote alarm Carrier Group Alarm CGA Audible visual and minor alarm contacts are provided The audible and visual contacts indicate major alarms A major alarm indicates a service affecting problem that requires maintenance action Visual contacts indicate a minor ala...

Page 30: ...on or removed from the 48 V DC power supplies In redundant DC power systems the system software indicates if one power supply has failed This allows insertion and removal of either power supply without interrupting service unless both power supplies are being used to provide power to the channel cards Minor Alarm The minor alarm relay closes for minor alarm reporting These pins are accessible on t...

Page 31: ...ll as on both T1 1 and T1 2 to interface to T1 carriers This version is used in drop and insert or dual channel bank applications The DSX 1 DSX 1 version provides DSX equalization on both sides This version is for private networks which require T1 test capabilities DSX 1 interfaces work well with transmission equipment such as microwave radios and fiber optic modems Lightning Protection When insta...

Page 32: ... DC supplies and operate with the line cards shown in Appendix B 24 Volt Compatibility The Dual CSU interface with integrated CSU capability part numbers 30318 101 30318 102 and 30318 103 will not operate in 24 V DC powered systems 110 Volt AC Power Supply An AC power supply is available for customer premise applications where only standard 110 V AC power is available Coastcom currently offers an ...

Page 33: ...ynchronous Digital Dataphone System DDS subrate compatible DS0A format DS0B format RS 232C interface DDS Interfaces Office Channel Unit Data Ports OCUDP 56 Kbps Switched 56 Kbps All Rate 2 4 4 8 9 6 56 Kbps 2 Wire Voice Foreign Exchange Service FXS Foreign Exchange Office FXO Private Line Automatic Ringdown PLAR Tandem Access TA 800 Service Megacom 2 Way Megacom Direct Inward Dialing DID Dial Puls...

Page 34: ...h Circuit Features Status information on circuits includes Option status Card type Serial number Card revision Firmware revision Data Circuit Features Polling most circuits Test loopbacks Reset T1 1 T1 2 bi directional provisioning Voice Circuit Features Transmission level adjust Tx and Rx Test loopbacks T1 1 T1 2 bi directional provisioning Refer to individual circuit card user manuals for furthe...

Page 35: ...ing connections for voice circuits data circuits T1 circuits power and synchronization Common equipment units are the essentials of every multiplexer They control the system perform the multiplexing function and interface to the T1 transmission lines A D I Mux III must have either a Common Control Unit CCU or an Advanced Multiplexer Control Unit AMCU two Line Interface Units LIUs a Dual DSX 1 or D...

Page 36: ...Chapter 1 System Overview and Modes of Operation 16 ...

Page 37: ...slots i e 8 12 and 24 refers to the number of slots available for installation of line cards after the common equipment has been installed Common equipment such as the CCU AMCU and LIUs do not occupy any of the 8 12 or 24 slots The three shelves accommodate the same common equipment and line cards except the 12 slot which will not accept the now obsolete 30308 102A AC DC power supply due to physic...

Page 38: ...acility Data Link Processor FDLP is installed and a network Line Monitoring Unit requests performance per AT T Publication 54016 DB 15 female connectors or RJ 48 connectors are used to connect to the T1 transmission lines Both connectors are wired in parallel for convenient selection The T1 1 connector is used for channel bank mode Both T1 1 and T1 2 connectors are used for drop and insert dual ch...

Page 39: ... following section lists and describes the D I Mux III system common equipment The common equipment functions are illustrated in simplified block diagrams Common Control Unit The Common Control Unit CCU stores the operating parameters for control and monitoring of all common equipment and channel cards in the D I Mux III The primary functions of the CCU are as follows Provide an interface for an a...

Page 40: ...Chapter 1 System Overview and Modes of Operation 20 Figure 1 10 Common Control Unit Block Diagram ...

Page 41: ...hronous communication data rates 300 1200 2400 4800 9600 and 19 200 bps The default setting from the factory is 1200 bps ROM The Read Only Memory ROM contains the instructions used by the microcontroller RAM The microcontroller uses the Random Access Memory RAM for scratch pad memory Nonvolatile RAM Onboard Nonvolatile Random Access Memory NVRAM provides nonvolatile storage of map information and ...

Page 42: ...a two circuit board assembly comprising the control functions of the D I Mux III system with the SNMP feature It is incompatible with all releases of NCC products and does not support Coastcom proprietary Machine Machine Language MML For information on downward compatibility with CCU releases contact Coastcom s Application Engineering Department The AMCU is comprised of a motherboard and a sub boa...

Page 43: ...ry NVRAM provides nonvolatile storage of map information and other critical data for configuring the system All channel card settings and parameters are also stored in NVRAM A 7 year lithium battery included on the card preserves the information stored in NVRAM when power to the card is removed Date and Time Clock The date and time real time clock provides accurate time information day date hour m...

Page 44: ...chronization source Frequency Synthesizer The frequency synthesizer produces a 1 544 MHz Stratum IV clock It can synchronize an external clock input that is 8 kHz or greater and a multiple of 1600 Hz up to 1 544 MHz The external clock is from either the backplane Sync I O or the Slot 2 Synchronization source selection is under software control See Figure 1 11 for a detailed AMCU motherboard circui...

Page 45: ...Chapter 1 System Overview and Modes of Operation 25 Figure 1 11 AMCU Motherboard Circuit Flow Block Diagram ...

Page 46: ...to communicate with a centrally located Network Operations Center NOC A network manager uses automated tools for example to read or compile a Management Information Base or MIB to manage distributed node devices including D I Mux III multiplexers See Figure 1 12 for a detailed AMCU sub board block diagram Figure 1 12 AMCU Sub board Circuit Flow Block Diagram The following section lists and describ...

Page 47: ...ED glows red to indicate a major alarm condition impacting service It is marked MAJ major The LED marked MIN minor which glows yellow indicates faults occurring that do not impact service For more information on LEDs see Chapter 3 Installation and Chapter 5 Diagnostics I O Ports The AMCU utilizes the standard CCU provisioning bus port and a COM port for normal operation The provisioning bus is an ...

Page 48: ...During the power up the AMCU will compare its software revision with that on the PCMCIA card and if different it will download the code to the AMCU For information about code download through menu selection see Chapter 4 Configuration and Operation AMCU Power Consumption The AMCU consumes more power on the 5 V line than does the CCU due chiefly to the RISC processor peripheral Integrated Circuits ...

Page 49: ...al terminal all values available by local terminal will also be available via the Telnet connection except IP address and subnet mask The local terminal is an RS 232 serial connection The user must use the local terminal to enter an initial IP Address and subnet mask Using the local terminal will also lock out a Telnet session However a keyboard idle timer can disconnect the serial connection and ...

Page 50: ...h speed Dual Synchronous Data Channel Unit DSDCU Digital Program Channel cards DPCs and the Tandem Access Unit TAU can require more than one strobe and can move a greater amount of data on one circuit The Upper Strobe unit P N 30307 101 or 30307 103 is functionally equivalent to the Lower Strobe unit P N 30307 102 or 30307 104A The Upper Strobe is used only for the D I Mux III 24 slot shelf and pr...

Page 51: ...Chapter 1 System Overview and Modes of Operation 31 ...

Page 52: ...e the standard LIUs for use with twisted pair cable the ALPS LIUs and the Fiber LIU module for use with fiber optics For channel bank drop and insert or dual channel bank operation use Line Interface Unit B T1 1 Part Number 30309 104A Line Interface Unit A T1 2 Part Number 30309 114A For channel bank drop and insert dual channel bank with ALPS operation use ALPS Line Interface Unit B LIU B Part Nu...

Page 53: ...e LIU Network Loop switch sends a standard loopback code to another D I Mux III or Channel Service Unit CSU at the remote end After a network loop is established the information sent to the remote end will return to the local D I Mux III as a loopback The LIU Network Loop only functions when a Dual CSU Interface is installed ...

Page 54: ...ll as access and monitor jacks for line and equipment testing The bantam jacks provide access for monitoring the transmit and receive T1 lines Access jacks allow for breaking and testing the signal Monitor jacks do not interrupt the signal Dual CSU interfaces include line build out options at 0 7 5 and 15 dB Note The monitor jacks do not directly monitor the T1 lines The T1 signal first passes thr...

Page 55: ...s for use with the D I Mux III 48 VDC Redundant P N 30338 902 The 30338 902 is a DC to DC converter used to power D I Mux equipment from an external 48 VDC input supply Generates 12 and 5 volt outputs as well as failure alarm signals Also provides primary 48v power fusing Can be used in a redundant or load sharing configuration when two power supplies are installed When configured with FXS cards o...

Page 56: ...vide the interface between the Pulse Code Modulation PCM timeslot and the baseband voice and data signals Both hardware configured and dual channel software controlled 2 Wire FXS FXO and 4 Wire E M E M PLR TO 4W with SCG MXS MXO for use with Northern Telecom Meridian PBX voice line cards and Orderwire cards are available for D I Mux III multiplexers Digital Program Line Cards Digital program line ...

Page 57: ...p timing is provided by the clock recovered from the incoming T1 1 signal If the incoming T1 reference clock fails timing is derived from the D I Mux III s local timing source Local Timing Local timing clock source for the T1 1 output is derived from the system s internal 1 544 MHz oscillator This oscillator can run freely or be synchronized to one of three different clock sources as follows DB 9 ...

Page 58: ...Operation Recovered Timing T1 basic timing is independent for each transmission direction in drop and insert mode and is not selectable In this mode both T1 1 and T1 2 clocks must be the same T1 1 transmission timing is provided by clock recovered from T1 2 and T1 2 transmission timing is provided by clock recovered from T1 1 If one of the recovered clocks fails the system can derive timing from t...

Page 59: ...am location i e away from the clock source must be set to recovered timing The T1 1 and T1 2 receivers selection compensates for clock frequency variations between two similarly timed T1 paths as may be found between two different carriers Note that while this may imply that there are two clock sources here there are not The D I Mux III can only have one clock source per multiplexer Local Timing L...

Page 60: ...directly to the public network as depicted in Figure 2 1 In this configuration the D I Mux III connects T1 to the public digital switching system Network compatible circuits are a requirement and include all of Coastcom s standard voice frequency interfaces and Digital Dataphone Service DDS data cards Each circuit is given a telephone number or circuit identifier Calls are routed and set up by the...

Page 61: ...ched 56 operation In the Switched 56 mode the data is directed to various locations by the user A keypad on a Switched 56 Channel Service Unit Digital Service Unit CSU DSU ancillary equipment can then call up other Switched 56 locations similar to a standard telephone Coastcom s 5 port Subrate Data Multiplexer SDM line card offers DS0B DDS data rates of 2 4 4 8 9 6 and 19 2 Kbps The circuits are s...

Page 62: ... PBXs and local central offices has been 4 Wire Earth and Magnet E M trunks Coastcom offers 4 Wire E M line cards for connection of PBXs within a private T1 network Corporations that conduct a large amount of communication between their various facilities can benefit by dedicating a T1 network to internal communications High Speed Data A Dual Synchronous Data Channel Unit DSDCU can transfer data m...

Page 63: ...emote locations Minimizing the connections to the local telephone company s central office or private user s switch simplifies and economizes the network Foreign Exchange Office FXO channel cards receive calling information from a central office or user s switch which perceives the FXO to be a standard telephone The switch supplies talk battery ringing busy signals and all other telephone requirem...

Page 64: ...ice Video and Special Services Networks Dual channel bank operation is ideal for audio and compressed video networks From the public network standard telephone lines 800 lines and syndicated radio shows are brought into the studio FXS cards are used for the voice traffic and Digital Program Channels DPCs are used to bring in high quality audio from the special services network for the syndicated r...

Page 65: ...e installed in an equipment rack or can be wall mounted or desktop mounted as applicable Place the D I Mux III in an area free from extreme fluctuations of temperature humidity and vibration and avoid dusty areas Refer to Appendix A D I Mux III Specifications Allow one mounting space 1 75 inch above and below the D I Mux III for ventilation purposes To avoid electromagnetic susceptibility the D I ...

Page 66: ...SDCU line cards which have cable connections through their respective front panels The D I Mux III line card and common equipment modules are approximately 10 inches long Because all modules are inserted into the front of the shelf enough space must exist in front of the system to allow installation and access to the modules Coastcom recommends allowing an unobstructed depth of 18 inches at the ba...

Page 67: ...ith single or redundant 24 V DC supplies require modified common control equipment See Appendix B 24 V Compatibility regarding which common equipment and line cards operate from 24 V DC power 24 VDC Power Supply Capacity Coastcom s Applications Engineering group is available to assist in determining power requirements for systems requiring more than 12 data circuits with 24 V DC power systems 110 ...

Page 68: ... External brackets must be ordered for the 23 inch rack installation Coastcom P N 115632 02 One set of brackets is required for 8 slot and 12 slot shelves and two sets are required for 24 slot shelves When rack mounted both Electronic Industries Association EIA and Western Electric Company WECo mounting patterns are accommodated The shelf mounting ears are reversible accommodating flush mount or c...

Page 69: ...ount Base is recommended because it allows for proper air circulation under and through the D I Mux III Install the D I Mux III onto the Table Mount Base by removing the shelf mounting ears located on the sides of the shelf Reuse the screws that held the mounting ears in place to secure the shelf to the Table Mount Base Refer to Figure 3 3 for a depiction of the shelf and base ...

Page 70: ... Mount the shelf where ventilation is best Cooler operation of the unit will prolong the life of components and circuitry Avoid wet or extremely humid locations Give careful attention to mounting the multiplexer to a wall that has sufficient strength to bear the weight of the system Conformal coating is available for D I Mux III equipment installed in areas subject to high humidity heat or salt co...

Page 71: ...ts on the shelf to expedite the job Have an assistant steady the shelf while marking the hole A masonry drill is recommended for making the holes for the 8 x 1 1 2 inch anchor bolts Anchors can vary so select the appropriate drill sizes Insert the anchors into the holes then mount the multiplexer to the inserts To mount the multiplexer to a finished wall with 2 x 4 inch wood or metal studs the mul...

Page 72: ...Chapter 3 Installation 52 Figure 3 6 Basic Wall Mount Fastening Use these holes for securing To metal or wooden 2 x 4 studs ...

Page 73: ... handled by secondary protection devices The D I Mux III has secondary protection built in for all interfaces that are intended for off premises connections It should be emphasized that the D I Mux III or any similar multiplexer without primary surge protection cannot survive a lightning strike Protected Interfaces The following D I Mux III interfaces are designed for off premises outside plant co...

Page 74: ...le and a combination Universal configuration that includes both the two each DB 25 and three each 50 pin connectors FCC Radio Frequency Emission Compliance Electrical connections to D I Mux III shelves except terminal block connections must be made with shielded cables To ensure compliance with FCC emission levels each shield must cover all of the conductors and connect along the cable s outside p...

Page 75: ...Chapter 3 Installation 55 Figure 3 7 Containment of Radio Frequency Emissions AMCU Front Pantel CCU AMCU 8 Slot Shelf Backup ...

Page 76: ...Chapter 3 Installation 56 Figure 3 8 Backplane for 8 Slot Voice and Data Shelf F Female M Male P N 91620 308 ...

Page 77: ...Chapter 3 Installation 57 Figure 3 9 Backplane for 12 Slot Voice and Data Shelf F Female M Male P N 91620 312 ...

Page 78: ...Chapter 3 Installation 58 Figure 3 10 Backplane for 24 Slot Voice and Data Shelf F Female M Male P N 91620 324 ...

Page 79: ...Chapter 3 Installation 59 ...

Page 80: ...input terminal is labeled 48 V or BATT On shelves shipped after 1993 there is a jumper connecting the talk battery terminal to the DC power source This connection can be broken by setting the talk battery strap located on the back panel to the OUT position Note If using an external talk battery source ensure that the talk battery strap is set to the OUT position DC Power Ideally power should be tu...

Page 81: ...to a standard 110 V AC power outlet Extension cords are NOT recommended If an extension cord is necessary use only an extension cord that is fused or has a circuit breaker and is grounded such as a multiple outlet power strip Under applicable fire codes unprotected extension cords are illegal in most areas for use on any equipment located on commercial property Note When using 4 Wire E M cards ens...

Page 82: ...ures 3 12 and 3 13 for details 2 For single channel bank mode plug the T1 transmission line into the T1 1 connector on the shelf backplane for drop and insert mode or dual channel bank mode plug the T1 transmission lines into the T1 1 connector and T1 2 on the shelf backplane Figure 3 12 DB 15 T1 Female Connectors Figure 3 13 RJ 48 T1 Connectors ...

Page 83: ...hannel bank mode each communicating with the other in a point to point private network is a DTE to DTE connection Use Table 3 3 for cabling information When connecting a D I Mux III in drop and insert mode the T1 1 port typically connects to the T1 network and the T1 2 port connects to Data Terminal Equipment DTE Some examples of D I Mux III to DTE connections are Digital Private Branch Exchanges ...

Page 84: ...between co located D I Mux III shelves To connect to another D I MUX III connect pin 2 and pin 8 TTL 8 kHz input The Sync I O input function can synchronize the D I Mux III to another timing source The input to the Sync I O must be 8 kHz or greater and a multiple of 1600 Hz up to 1 544 MHz The driving balanced or TTL signal amplitude cannot exceed plus or minus 5 volts ground to peak value The D I...

Page 85: ... produce a 1 544 MHz clock reference The external input is 8 kHz or greater and is a multiple of 1600 Hz up to 1 544 MHz To use this option install a data card in slot 2 and set up the D I Mux III for Slot 2 Sync timing using the following software commands For further detail on software configuration refer to Chapter 4 Configuration and Operation SC Use the SC command to set the mode of operation...

Page 86: ...ce frequency VF connectors The nonuniversal 8 slot does not support 50 pin Voice or Data Jumpers Each card slot in the D I Mux III shelf using the 50 pin Amphenol type connector has a 6 pin jumper block located above and below its DB 25 connector to designate whether the line card uses the DB 25 or the 50 pin VF connector Sensitive data signals can be corrupted by voice card high voltage signaling...

Page 87: ...y are designated P1 P2 and P3 on the 8 slot and 12 slot shelves and P1 P2 P3 P4 P5 and P6 on the 24 slot shelf These connectors provide access to tip T ring R tip 1 T1 ring 1 R1 and Earth and Magnet E M signalling leads Note Use the DB 25 connectors to connect a voice card using types II or III E M signalling Types II and III signalling require signal ground and battery not available on the 50 pin...

Page 88: ...pendix E Wiring and Cable Tables Table 3 9 50 Pin Connector Pin Outs for the 8 and 12 Slot Shelves Card Slot Channel A Channel B R T R1 T1 M E R T R1 T1 M E 1 P1 1 26 P2 1 26 P3 1 26 P1 13 38 P2 13 38 P3 13 38 2 P1 2 27 P2 2 27 P3 2 27 P1 14 39 P2 14 39 P3 14 39 3 P1 3 28 P2 3 28 P3 3 28 P1 15 40 P2 15 40 P3 15 40 4 P1 4 29 P2 4 29 P3 4 29 P1 16 41 P2 16 41 P3 16 41 5 P1 5 30 P2 5 30 P3 5 30 P1 17...

Page 89: ...P4 10 35 P5 10 35 P6 10 35 P4 22 47 P5 22 47 P6 22 47 11 P4 11 36 P5 11 36 P6 11 36 P4 23 48 P5 23 48 P6 23 48 12 P4 12 37 P5 12 37 P6 12 37 P4 24 49 P5 24 49 P6 24 49 13 P1 1 26 P2 1 26 P3 1 26 P1 13 38 P2 13 38 P3 13 38 14 P1 2 27 P2 2 27 P3 2 27 P1 14 39 P2 14 39 P3 14 39 15 P1 3 28 P2 3 28 P3 3 28 P1 15 40 P2 15 40 P3 15 40 16 P1 4 29 P2 4 29 P3 4 29 P1 16 41 P2 16 41 P3 16 41 17 P1 5 30 P2 5 ...

Page 90: ... Bl Rd 6A TR T1R1 E M Or Rd 7A TR T1R1 E M Gr Rd 8A TR T1R1 E M Br Rd 9A TR T1R1 E M Sl Rd 10A TR T1R1 E M Bl Bk 11A TR T1R1 E M Or Bk 12A TR T1R1 E M Gr Bk 1B TR T1R1 E M Br Bk 2B TR T1R1 E M Sl Bk 3B TR T1R1 E M Bl Yel 4B TR T1R1 E M Or Yel 5B TR T1R1 E M Gr Yel 6B TR T1R1 E M Br Yel 7B TR T1R1 E M Sl Yel 8B TR T1R1 E M Bl Vio 9B TR T1R1 E M Or Vio 10B TR T1R1 E M Gr Vio 11B TR T1R1 E M Br Vio 1...

Page 91: ...lation The DB 25 data connectors can be used for voice connections which require Type II and Type III signalling The DB 25 connector pin outs are shown in Figures 3 16 through 3 20 Figure 3 16 shows the DB 25 pin outs for single channel A only and dual channel A and B voice line cards while Figure 3 17 describes the DB 25 to wire wrap connections Figures 3 18 through 3 20 detail connections for us...

Page 92: ...able for the selected line card application 2 Connect the cable to the equipment and route the cable to the D I Mux III 3 At the D I Mux III backplane plug the cable into the DB 25 connector which corresponds to the desired voice circuit 4 Set the jumper located under the DB 25 connector to the DATA position connecting the voice circuit through the DB 25 connector 5 If accessible tie cables to the...

Page 93: ...onnect the Data Terminal Equipment DTE to the D I Mux III The D I Mux III end of the cable must have a male DB 25 connector The opposite end of the cable must have the appropriate connector for matching user equipment Please consult the appropriate data card manual for detailed cable pinouts connections Figure 3 18 RS 232C Female Data Circuit DCE Figure 3 19 RS 449 Female Data Circuit ...

Page 94: ... line card slot of the multiplexer See the D I Mux III front view diagrams in Figures 3 15 3 16 and 3 17 for the location of the various card slots and follow the order given in this chapter for common equipment installation See Appendix F Shelf Supplement for details on older model shelves Warning Power down the shelf when installing or replacing common equipment Check the static strip in the she...

Page 95: ...d from the static shielded bag 5 Place jumpers in appropriate positions for each line card as directed in specific line card user manuals 6 Slide the unit as far as it will go into the correct card slot in the D I Mux III shelf 7 Return the front panel to its upright position so it locks into the shelf 8 Push evenly and firmly on card front panel then apply firm pressure to lower part of front pan...

Page 96: ...Chapter 3 Installation 76 Figure 3 21 8 Slot Shelves Front View P N 91620 308 and 91319 608 Figure 3 22 12 Slot Shelf Front View P N 91620 312 Figure 3 23 24 Slot Shelf Front View P N 91620 324 ...

Page 97: ...ured map if there is not a control terminal available for software configuration of the D I Mux III The Upper Strobe Unit P N 30307 103 provides strobe timing information for the upper 12 card slots in a 24 slot shelf The Upper Strobe switches are ignored Refer to Figure 3 18 for depictions of the Upper and Lower Strobe Units In an emergency an Upper Strobe unit can be converted to a Lower Strobe ...

Page 98: ...r greater flexibility than working with option switches Setting the Data Rate and Communications Protocol The control terminal or device should be set up with the following asynchronous communications protocol when the 1200 bps data rate is selected using jumper W1 1200 bps data rate 8 data bits 1 stop bit no parity When using Non Volatile Random Access Memory NVRAM for data rate selection the rat...

Page 99: ...II is controlled by standard terminals using ASCII code With W2 set to the top position the D I Mux III is controlled with Coastcom proprietary language Front Panel LEDs Front panel Light Emitting Diodes LEDs indicate the current status of the CCU The control terminal of the D I Mux III will also display the indicator status Table 3 5 CCU LED Indicators CCU P N 30305 106 30305 108 and 30305 110 Fr...

Page 100: ...tiplexer Control Unit Front Panel The AMCU is a two card assembly comprised of a standard CCU board and a 32 bit processor sub board The sub board is required for SNMP capability and provides the interface between all line cards and the system operator ...

Page 101: ...CU AMCU is waiting for special instructions from the AMCU sub board In code levels of 8 4 9 4 or higher this LED state indicates that the EPROMs have not been programmed properly ACO blinks rapidly The CCU AMCU is erasing FLASH RAM ACO alternates with MAJ The CCU AMCU is downloading new code from the AMCU sub board The MAJOR LED is ON during the transfer of a section of code and the ACO LED is ON ...

Page 102: ...ace is used to provision and control all the cards in the shelf COM Port The COM port is an RS 232 asynchronous interface capable of standard data rate speeds of between 1200 bps and 19200 bps The port is used by the system operator to configure and control or poll status and alarms from any of the cards Ethernet 10Base T Port The high speed Ethernet 10Base T port allows an SNMP manager or Telnet ...

Page 103: ...Chapter 3 Installation 83 See Figure 3 21 for pin out of Ethernet 10Base T and SLIP PPP ports Figure 3 27 Ethernet and SLIP PPP Port Pin Outs ...

Page 104: ...and 3 8 for lists of LIU front panel LED indicators and DIP switches Table 3 7 LIU LED Indicators P N 30309 104A and 30309 114A Front Panel Label LED Color Description LOC Red Local alarm T1 framing or input signal lost YEL Yellow Remote alarm T1 remote alarm received CGA Yellow Carrier Group Alarm carrier taken off line FRM Red Receiving framing errors B7 Green Bit 7 stuffing selected BPV Yellow ...

Page 105: ...A and 30309 114A LIU Option Switches On an option switch power up the D I Mux III is configured from the option switches on LIU A Use Figure 3 22 above and Table 3 8 on the following page to set operation with the option switches Coastcom recommends configuring both LIUs with the same settings ...

Page 106: ...Closed Block yellow alarm 8 ALPS Open ALPS mode Closed No effect Switch SW2 4 will perform a different function depending on the multiplexer mode selection as determined by switch segments 5 6 and 7 The D I Mux III has Non Volatile Random Access Memory NVRAM allowing the LIUs to be software configured System configuration on a power up can be accomplished with the System Configuration SC command R...

Page 107: ...tion for the following cable lengths 0 150 ft 150 450 ft 450 750 ft The Dual DSX 1 Interfaces are hardware only cards and cannot communicate with D I Mux III control software An installed Dual DSX 1 Interface will appear to the system software as an empty card slot Note Neither the standard nor the enhanced version of the DSX 1 Interface is designed to be connected to outside plant T1 span lines M...

Page 108: ... both directions Jumpers W1 and W2 on the main circuit board will either loop span power back toward the span power source when the jumpers are in the vertical position or will bypass the span power around the D I Mux III when the jumpers are in the default or horizontal position WARNING Be sure to plug the Dual CSU Interface into its designated slot Inadvertently plugging it into other than its o...

Page 109: ...necting this unit or changing any switch settings Refer to the FCC and Telephone Company Requirements and Procedures section preceding the Table of Contents in this manual for further information Refer to Figure 3 24 for front and side views of the Dual CSU Interface Unit Figure 3 30 Dual CSU Interface Front and Side Views P N 30318 101 102 103 ...

Page 110: ...f the maximum number of any particular type of line card that can be used with different power configurations For systems with a combination of different cards with one type of line card approaching its power limitations contact Coastcom s Applications Engineering group for a power requirements evaluation Except where noted the power matrix tables are for all D I Mux III shelves in a nominal 0 50 ...

Page 111: ...0451 101 8 8 24 24 24 DSDCU with RS 422 Interface 30451 101 24 18 24 24 24 DSDCU with RS 232C Interface 30451 101 18 18 18 24 18 SDM pSDM 30355 XXX 12 24 Opt 10 20 Opt 12 24 Opt 24 12 24 Opt OCUDP 30358 106 107 108 24 24 24 24 24 Async DCU 30011 1XX 24 18 24 24 24 Async DCU 30011 0XX 8 16 24 24 24 DSUDP 30358 101 8 18 24 24 24 Full configuration for the SDM product is defined as operating with fiv...

Page 112: ...y 30314 101 1 Unit or 2 Redundant Dual 2W FXS 33242 XX4 with cadenced ringing 24 24 24 24 24 Dual 2W FXO 33242 XX5 24 24 24 24 24 Dual 4W E M 33245 XXX 24 24 24 24 24 DPC Transmit 32405 XXX 5 8 8 8 Not Available DPC Receive 32406 XXX 8 8 8 8 Not Available ADPCM 30245 1XX 16 12 16 24 16 Smart Omni Orderwire 30313 XXX 24 24 24 24 24 MXO 33243 105 24 18 24 24 24 MXS 33243 104 24 18 24 24 24 DC power ...

Page 113: ...ice and data channel units Maximum refers to a fully outfitted shelf with high consumption data channel units Maximum quiescent current for DC powered shelves includes consumption of redundant power supplies 48 V DC Power Unit P N 30338 102 and 30338 902 Two 48 V DC power supplies can be used to provide redundancy the additional power supply plugs into a designated slot next to the first power sup...

Page 114: ... the shelf being powered as follows 8 slot Card slot marked DC PWR the second from the right card slot 12 Slot Card slot marked DC PWR the top middle horizontal slot the bottom of the card toward the left of the shelf 24 Slot Card slot marked DC PWR second card slot from the left on the upper shelf 2 If a second DC Power Unit is to be used place it in the second power supply card slot as follows 8...

Page 115: ... all of the voltages necessary to operate a D I Mux III except ringing voltage When configured with FXS feature cards order modular Ringing Generator 30333 101 Provides 12 5 and 48 Can be used in 8 12 and 24 slot shelves Replaces a 30308 102A and the combination option of 30315 105A with 30338 103A Cannot be used in combination with any other power supply Figure 3 31 110 V AC Power Supply Front an...

Page 116: ...the backplane connector and bracket on the supply 4 Complete the common equipment installation and cabling before powering up the system 5 The AC power is connected through the rear of the unit with a standard IEC line cord supplied with the unit Connect the line cord through the opening in the backplane to the supply 6 Connect the plug end of the line cord to a 110 V AC 50 60 Hz properly grounded...

Page 117: ...supply is protected by a front panel user replaceable 3AG type glass fuse Smart Interface The 30308 102 Smart Interface consists of a microcontroller a watchdog timer a provisioning bus interface an analog to digital converter with a companion voltage reference and a programmable memory that retains unit identification information Each power supply output is measured and reported to the CCU MCU Th...

Page 118: ...ts until the card s edge firmly engages the connector fingers The slots have a rectangular opening for the cord to fasten through the backplane and a hole for the grounding lug The Smart 110V Power Supply occupies both power supply positions 4 Install the 10 32 ground nut previously removed in step 2 above or packed loosely on the lug at the rear of the system Tighten the lug to secure grounding b...

Page 119: ...rd 3 Gently tap or push the grounding stud at the rear of the system with a nut driver handle malleable handle or a piece of wood to remove the supply 4 After removing the supply from the slot refasten the nut removed in step 2 onto the lug Gently tighten the nut 5 Replace the power supply in a static shielded bag Transmission Connection With all the cabling and common equipment installed the syst...

Page 120: ... manuals apply power to the D I Mux III shelf Feature Group 8 4 9 4 1 4 includes a power up cycle that features a 25 second self test and a 20 second initialization routine including warm up During the self test the CCU AMCU MCU ACO LED flickers and the BYP LED remains lit Upon completion of self test the initialization routine begins during which the LIU LEDs cycle on and off Note Depressing the ...

Page 121: ...ections as follows The Overall System Command Organization with figure number references is listed in Figure 4 1 The Setup and Programming Order lists the local and network commands in a functional sequence figure numbers are referenced for detail on the various commands A Command Index listed alphabetically includes actual screen instructions as necessary and a discussion of commands and resultin...

Page 122: ...Monitor Figure 4 37 DH Display Alarm History Figure 4 13 SB Set Error Rate Figure 4 41 ZH Clear Alarm History Figure 4 71 Passwords LO Logout Returns to MCU Main Menu Figure 4 24 DW Display Passwords Figure 4 22 SW Set Install Passwords Figure 4 65 EW Erase Passwords Figure 4 23 Alarms DA Display Alarms Figure 4 10 ZA Clear Counts Figure 4 70 SO Set Communications Reports Figure 4 59 Diagnostics O...

Page 123: ...is as follows 1 Access CCU D I Mux III user submenu AC Figure 4 6 2 Set communication Rate SR Figure 4 61 3 Set shelf Configuration SC Figure 4 44 4 Set system Parameters SP Figure 4 60 5 Set Line card configuration SL Figure 4 53 6 Set edit a Map matrix SM Figure 4 54 7 Set edit a map Table ST Figure 4 64 8 Set the New working map SN Figure 4 58 9 Set clock Source SS Figure 4 62 10 Select Perform...

Page 124: ...ered are shown in bold type A screen example follows each procedure description Values shown in square brackets are default values If something other than the default value is entered the new value appears in the brackets the next time that parameter is edited The enter key indicated by Enter in the text is pressed after each entry to select the default or new values To make corrections simply bac...

Page 125: ...TING Type for Help 08 42 57 Menu 11 28 95 ALARMS SYSTEM PARAMETERS DA Display DP Display ZA Clr Cnts SO Set Comm Rpts SR Set Comm Rate SP Set SHELF CONFIGURATION LINE CARDS DC Display DL Display Table DD Disp Config SC Set CL Copy Config SL Set Config MAP TABLE MAP MATRIX DT Display DN Disp Wrking DM Display ST Edit SN Set Wrking SM Edit CM Copy CLOCK SOURCE DIAGNOSTICS DS Display SS Set OL Line C...

Page 126: ...sion Levels VN View Network Parameters MT Modify Keyboard Time out MG Modify Default Gateway MI Modify IP Address MS Modify Subnet Mask ML Modify SLIP Parameters D I MUX III USER SCREEN CODE DOWNLOAD AC Access CCU User Submenu MC Download CCU Program PASSWORDS SNMP MANAGER CONFIGURATION VP View Passwords VM View Managers MP Modify Install Password MM Modify Install Manager RP Remove Password RM Re...

Page 127: ...ess CCU User Submenu MC Download CCU Program SNMP MANAGER CONFIGURATION VM View Managers MM Modify Install Manager RM Remove Manager Q Quit Disconnect Figure 4 4 AMCU Main Menu Access Level 2 Welcome to the Coastcom D I Mux III Configuration System Copyright 1995 Coastcom Alameda California 13 16 13 06 08 95 Access Level is 3 Type for Help 13 16 16 AMCU Main Menu 06 08 95 LOCAL PARAMETERS NETWORK ...

Page 128: ...SP Set SHELF CONFIGURATION LINE CARDS DC Display DL Display Table DD Disp Config SC Set CL Copy Config SL Set Config MAP TABLE MAP MATRIX DT Display DN Disp Wrking DM Display ST Edit SN Set Wrking SM Edit CM Copy CLOCK SOURCE DIAGNOSTICS DS Display SS Set OL Line Card OD T1 CSU PASSWORDS PERFORMANCE LO Logout SW Install PM FDL Monitor SB Set Error Rate DW Display EW Erase DH Alarm History ZH Clr A...

Page 129: ...tely 45 seconds 3 Type VM to view the default SNMP manager 4 Remove the default SNMP manager by typing RM then press Enter The system will then prompt for entry of the manager IP Address to be erased Type the number 255 255 255 255 and press Enter This number is a global command and will erase the default values 5 The system will now accept all SNMP managers 6 To configure the SNMP manager type MM...

Page 130: ...slot 2 receives the copied line card configuration WARNING DO NOT copy a single card configuration to more than 12 line cards at once or all line cards will be configured to the same T1 channel When configuring a 24 slot multiplexer copy the configuration in two phases Ensure that only cards assigned to T1 1 are copied to other cards being used on T1 1 This applies to T1 2 cards also DO NOT mix T1...

Page 131: ...ther enter CM and press Enter Enter the number of the source map 1 is the source map to be copied in the example below Enter the number of the destination map 6 is the number of the map that will receive the copied map in the example below Refer to Figure 4 9 for a depiction of the screen sequence To review the map select Yes otherwise select No at the appropriate prompt To apply changes select Ye...

Page 132: ...ased on the current status of the alarm The Count keeps track of the number of times the alarm cycled between clear and active states Note that the count becomes incremental when the alarm goes to active status DA 10 48 55 T1 Alarm Data 03 08 95 Card Slot Alarm Level Status Count LIU T1 2 RED Alarm Major Active 2 LIU T1 2 CGA Info Active 2 LIU T1 2 CLOCK Change Info Clear 1 LIU T1 2 RCVD Clk Loss ...

Page 133: ...5 Operation Mode Drop and Insert T1 Interface Normal Shelf Timing Loop Working Map 1 Network Clk Src T1 2 Frame Mode 193S Zero Suppression Transparent Jitter Atten UI 28 T1 1 REM Output T1 1 T1 1 FRM ERT 0E 0 T1 2 REM Output T1 2 T1 2 FRM ERT 0E 0 Hardware Serial Software Card Type Part Number Rev Number Revision T1 CSU 30318 101 D 102572 0002 B 04 09 90 A LIU T1 2 30309 115 E A76558 0032 B 10 20 ...

Page 134: ...10 15 59 Slot 3 D4W 03 08 95 Current Channel Status Ch A CGA Ch B Not Mapped Direction T1 1 Loopback Not Active Signalling Type E M Type 1 3 CGA Type 3 Signalling Mode Normal E M Chan Label Tx Level Rx Level A 16 0 dBm 7 0 dBm B 16 0 dBm 7 0 dBm Hardware Serial Software Card Type Part Number Rev Number Revision D4W 33245 103 L 210710 0059 E 06 18 92 Figure 4 12 Displaying Line Card Data Screen Not...

Page 135: ...H 10 39 38 Alarm Log 03 08 95 Log Time Date Card Slot Alarm Level Status 1 10 15 3 08 95 D4W 3 Card Added Info 2 9 54 3 08 95 LIU T1 1 RCVD Clk Loss Major Active 3 9 54 3 08 95 LIU T1 2 RCVD Clk Loss Major Active 4 9 54 3 08 95 LIU T1 1 CGA Info Active 5 9 54 3 08 95 LIU T1 1 RED Alarm Major Active 6 9 54 3 08 95 LIU T1 2 CGA Info Active 7 9 54 3 08 95 LIU T1 2 RED Alarm Major Active 8 9 54 3 08 9...

Page 136: ...he Set Line card configuration SL command are displayed Active data rates are shown for all mapped cards DL Slot RANGE All Slots 1 12 10 15 46 Line Card Table 03 08 95 Power Up Data Rate Slot Label Card Type Config T R of DS0s Direction 3 A D4W Switch 0K 0K 1 T1 1 3 B D4W Switch 0K 0K 0 5 SDM NV Ram 64K 64K 1 T1 1 7 OCUDP Switch 56K 56K 1 T1 1 Figure 4 14 Displaying Installed Line Card Table ...

Page 137: ...been selected At the next prompt enter 1 to display the Line Card Map Figure 4 15 shows the entire prompt sequence after DM DM Display Map Number 1 Display 1 Linecard Map 2 DS0 Assignment Map 1 Slot RANGE All Slots 1 12 5 17 17 14 WORKING Linecard Map 1 T1 1 06 25 92 DS0 SLOT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 5 TR Figure 4 15 Displaying the Map Matrix ...

Page 138: ...ype or blocking If no cards are assigned to a DS0 as shown in Map 2 T1 2 nothing will be shown in the card slot row display and Xs should appear on the data line DM Display Map Number 2 Display 1 Linecard Map 2 DS0 Assignment Map 1 2 10 31 46 Map 2 T1 1 08 18 92 DS0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Voice TR TR TR TR TR TR Data TR x x x x x x x x x x x x x x x x x x x ...

Page 139: ... in Figure 4 18 DP 09 55 03 System Parameters 03 08 95 System Label Day Of Week Wed System ID 0 Alarm Report Mode REPORTING Shelf Size 12 Alarm Report Bell OFF Comm Mode TERM Data Rate Jumper W1 Disabled Comm Data Rate 19200 MML Jumper W2 Disabled Modem Present NO I960 MCU Present Yes Port Exp Present NO Mapping Restrictions Enabled CGA Release Secs 5 0 REM Alarm Block DCGA Delay Secs 2 5 TX REM A...

Page 140: ...re listed under the T1 1 and T1 2 Clock columns The primary clock source when the system is operating normally is shown in the No Alarm row This screen will change depending upon mode of operation and timing source It will also change if the user chooses an internal clock other than the default shown on the SS screen DS 10 29 21 Transmit Clock Sources 03 08 95 Drop Insert Loop Timing Alarm Conditi...

Page 141: ...connection at the D I Mux backplane is connected to shelf ground refer to SYNC I O connector information in Chapter 3 Installation for connection details The event map takes precedence over both time and manual maps and is enabled as long as ground is supplied to the event connection When the event trigger is switched on the event map becomes the working map when the event trigger is switched off ...

Page 142: ...supply is installed in the D I Mux III system Figure 4 21 depicts the DV screen DV 10 03 19 PS 1 AC DC 03 08 95 Minus 12V 12 1 Plus 12V 12 0 Minus 5V 5 0 Plus 5V 5 0 Minus 48V 48 4 SB Fuse OK Ringing Generator Voltage 266 8 V p p Trip Margin 83 0 V Frequency 20 Hz Minor Alarm Enabled Hardware Serial Software Card Type Part Number Rev Number Revision AC DC 30308 101 B 113611 0017 B 9 26 91 Figure 4...

Page 143: ... 6 7 8 Figure 4 22 Displaying the Current Password Note Only a Level 1 password user will be able to display the passwords screen EW Erasing Passwords Enter EW to Erase passWords Figure 4 23 In the event of a manual NVRAM reset startup all configuration parameters including passwords are erased There is no default password EW Enter Password to Erase Tech1 Password Erased Figure 4 23 Erasing Passwo...

Page 144: ...ng the CCU Downloading Code From the AMCU Main Menu to Modify download Code to the CCU use the MC command as shown in Figure 4 25 MC Copy program from the PCMCIA Card to CCU Flash memory PCMCIA Card CCU program revision 1 3 Current CCU program revision 1 2 Are you sure N Y Erase CCU Flash Memory Remaining blocks 466 of 466 Remaining blocks 465 of 466 Remaining blocks 464 of 466 Remaining blocks 2 ...

Page 145: ...nit Do you want to continue N y Do you want to define a gateway N y Enter the Gateway IP Address None 130 1 10 50 Stand by to reboot Confirm N y Password Welcome to Coastcom D I Mux III Configuration System Copyright c 1995 Coastcom Alameda California 15 15 37 06 08 95 Access Level is 1 Type for Help VN 15 15 42 Network Parameters 06 08 95 MAC Address 00 A0 70 00 00 02 IP Address 130 1 10 99 Subne...

Page 146: ...ated with the local LAN administrator MI Changing the IP Address requires rebooting the unit Do you want to continue N y Enter Local IP Address 127 0 0 1 130 1 10 99 Stand by to reboot Confirm N y Password Welcome to Coastcom D I Mux III Configuration System Copyright c 1995 Coastcom Alameda California 15 18 42 06 08 95 Access Level is 1 Type for Help VN 15 18 46 Network Parameters 06 08 95 MAC Ad...

Page 147: ...Consult the local LAN administrator for assistance with these address assignments ML Changing the SLIP parameters requires rebooting the unit Do you want to continue N y Enter SLIP Local IP Address 130 1 10 98 Enter SLIP Peer s IP Address 130 1 10 15 Enter SLIP MTU Max Transmission Unit 1006 Recommended 1006 Enter SLIP Port Data Rate 3 300 12 1200 24 2400 48 4800 96 9600 96 Stand by to reboot Conf...

Page 148: ...s of 130 1 10 25 to have Set and Get access and to receive Traps all with a community string of public By convention the community string public is used when it is not desired that access be restricted The SNMP manager must then be configured to use public If 255 255 255 255 is entered as an IP Address an SNMP manager at any IP Address is allowed the specified access MM Enter Manager IP Address 13...

Page 149: ...e MP Modify install Password screen Level 3 access permits only system monitoring The main menu screen for a Level 3 user shows only the display options Once established the Level 1 password takes precedence Be careful not to lose this password Write it down and place it in a secure location It is required for maximum system control Note When creating passwords the Level 1 password must be created...

Page 150: ...l appear The Subnet Mask modifies which portion of the IP Address is interpreted as the network portion Consult the local LAN administrator prior to setting the IP Address or Subnet Mask MS Changing Subnet Mask requires rebooting the unit Do you want to continue N y Enter Subnet Mask 255 255 255 0 255 255 0 0 Stand by to reboot Confirm N y Password Figure 4 31 Modifying the Subnet Mask ...

Page 151: ...ally end allowing another session to be opened MT Keyboard Time out 1 No Time out 2 5 Minutes 3 15 Minutes 4 30 Minutes 5 60 Minutes 3 Figure 4 32 Modifying Keyboard Time out Note The No Time out selection should only be used for testing purposes when the MCU is locally accessible If the keyboard time out option is set to No Time out and the communication link is severed during an active Telnet se...

Page 152: ...terface there may be different options presented for shelf control selections Refer to Chapter 5 Diagnostics for more detail OD 12 07 47 Operate Diagnostics 03 08 95 T1 Interface Normal Shelf Controls C Bypass E Reset Common Line Cards D Unbypass F Unloop Line Cards G Shelf Restart O Acknowledge ACO H Display Alarms Q Quit Figure 4 33 Operate Diagnostics Menu For Shelf With DSX Interface ...

Page 153: ...e slot 7 contains a Dual 2 Wire FXS card See specific line card user manuals for more details on diagnostic options OL Slot Number 7 13 11 35 Operate Slot 7 D2W FXS 05 20 94 Current Status Ch A Not Mapped Ch B Not Mapped 1 Disable channels on next idle 2 Disable channels immediately 3 Set Clear digital loopback 4 Line Build Out Cap adjustment 5 Report signalling bits status 6 Enable channels 7 Ch ...

Page 154: ...0 Ringing 0 1 Idle Channel B 0 0 Ringing 0 1 Idle Based on signalling bits and card mode Press Enter to Continue Figure 4 35 Reporting Signaling Bit Status Selecting options 7 or 8 on the Line Card Diagnostic Menu prompts the screen depicted in Figure 4 36 to appear Current Status Ch A Disabled Ch B Disabled Transmit Override Status For Ch A Set Clear Card Status Pending Status 1 2 Ringback Tone O...

Page 155: ...ect Side AT T ANSI A T1 1 D User G AT T B T1 2 E Network H ANSI C Both F Both I Both T1 1 User AT T ANSI T1 1 None T1 2 Screen Reports Clear Counters Printer Reports 0 Current Status 4 ESF Errors 6 ESF Error Counts 1 1 Hour 5 Others 7 1 Hour 2 24 Hour 8 24 Hour 3 ANSI 9 ANSI Logging of Network Messages Network May Reset User Counters L Disable P Disable M Enable With Data R Enable N Enable Without...

Page 156: ... password If no passwords are installed simply press Enter to begin a new session Q Password Welcome to the Coastcom D I Mux III Configuration System Copyright 1995 Coastcom Alameda California 08 41 54 11 28 94 Access Level is 1 Type for Help Figure 4 38 Quit Command RM Removing the Manager To Remove an SNMP Manager use the RM command as shown in Figure 4 39 When prompted enter the IP Address of t...

Page 157: ...per Framing ESF supports Cyclic Redundancy Check CRC ERT alarms D4 SF supports frame ERT alarms Figure 4 41 depicts the Frame ERT Alarm screen The CRC ERT alarms are configured exactly the same way except that exponent ranges and resolution values differ Choose a menu option and confirm the selection or port outgoing incoming or both for which the frame ERT alarm is to be set SB 07 46 39 Set Frame...

Page 158: ...e 4 42 T1 1 Alarm Set Pt Mantissa 1 9 9 Exponent 3 6 3 Figure 4 42 Setting Set Points The resolution determines the size of the T1 signal sample The higher the resolution the longer it takes to complete sampling To change the ERT resolution enter a selection option as shown in Figure 4 43 T1 1 Min Resolution Sample Time 1 1E 5 12 5 Secs 2 1E 6 2 Mins 3 1E 7 21 Mins 4 1E 8 3 5 Hrs 2 Figure 4 43 Set...

Page 159: ...ates after the first two entries SC Enter Shelf Configuration Information Source of Shelf Configuration Settings after Power Cycle N NVRAM O LIU A Option Switches N Source of Strobe Card Configuration Settings after Power Cycle N NVRAM O Strobe Card Option Switches N Mode of Operation C Channel Bank D Drop Insert S Dual Channel Bank A ALPS A Figure 4 44 Setting Shelf Configuration If the ALPS A mo...

Page 160: ...her sites must be set to Loop Shelf Timing L Loop C Local Figure 4 46 Shelf Timing Options If the drop and insert mode is selected the screen shown below will prompt for selection of the T1 port to which the network clock will be connected The network clock source will be the primary timing source for the D I Mux III Figure 4 47 depicts the network clock source option screen Network Clock Connecte...

Page 161: ...cted for dual channel bank mode the system prompts with the following choices as shown in Figure 4 49 Network Clock Connected to 1 T1 1 2 T1 2 3 T1 1 and T1 2 Figure 4 49 Selecting Network Clock with Loop Timing for Dual Channel Bank Operation For all modes except ALPS the system displays the screens below Figures 4 50 and 4 51 in order to specify a frame mode and zero suppression mode compatible ...

Page 162: ...igure 4 50 select T1 1 T1 2 both or none If using a Data Service Unit Data Port DSUDP line card the direction and transmission port selection must be set as is the case for all individual line cards The direction is user configurable unless the mode of operation dictates the direction of transmission Typically use the T1 1 port when in channel bank mode Use both ports when in dual channel bank and...

Page 163: ...ter 4 Configuration and Operation 143 T1 1 REM Alarm Output N None 1 T1 1 2 T1 2 B Both 1 T1 2 REM Alarm Output N None 1 T1 1 2 T1 2 B Both 2 Apply Changes Y Yes N No Y N Y Figure 4 52 Directing REM Output ...

Page 164: ...ion for a hardware configured Digital Program Channel DPC In the case of hardware configured cards only the card type may be designated No other software commands will apply to those cards Enter SL for the Setting Line card configuration screen Figure 4 53 SL Enter Line Card Configuration Information Slot Number 1 Label for Slot 1 up to 10 Characters Enter Card Type for Slot 1 A 4 Wire B 2 Wire C ...

Page 165: ...when prompted for Direction To Edit Enter Y to clear the line card map and create a whole new map or N to edit the map as depicted in Figure 4 55 Editing Line Card Map 3 for Port Direction T1 1 Clear Linecard Map Y Yes N No N Y Figure 4 55 Clearing or Editing the Line Card Map Some voice line cards that have more than one channel as well as high speed data channels can have several DS0s assigned t...

Page 166: ...line card map will then assign DS0s to the various channels of the line cards all of which will be displayed The D I Mux III allows up to seven 7 map configurations per line card If for example more bandwidth is required for data transmission in the evening hours when voice traffic is minimal a separate map can be configured for that time of day specifying data versus voice Conversely the daytime ...

Page 167: ...t DS0 B Application D Data V Voice D V DS0 SLOT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1A TR Line Card Slot Number 1A 24B Quit 2 Card Type SDCU DS0 SLOT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2 DS0 Range 1 24 All DS0s C Clear All DS0s Quit Slot 2 Enter T Transmit R Receive B Both C Clear Quit DS0 B DS0 SLOT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1...

Page 168: ... T1 direction and clearing maps Once editing tasks are completed press No The map can then be reviewed and work can be saved with a Yes response to the Apply Changes prompt 10 33 38 Linecard Map 3 T1 1 08 18 96 DS0 SLOT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1A TR 2 TR Press Enter to Continue 10 33 46 WORKING DS0 Assignment Map 4 T1 1 08 18 96 DS0 1 2 3 4 5 6 7 8 9 10 11 12...

Page 169: ...iled information on communications configuration refer to Appendix J Set Report Options SO Current Mode TERM DIALOUT ALARM REPORTING Communication Configuration C COMM mode D Display Modem Port expander Config M Change Modem Config P Change Port Expander Config Q Quit Q Figure 4 59 Displaying and Setting the Communications Configuration SP Setting System Operation Parameters Use the SP command to ...

Page 170: ...itter Attenuation Jitter is T1 signal distortion caused by noise or timing differences attenuation reduces the amount of jitter Jitter Attenuation Depth 28 Units per interval is the more stringent limit that can be set for attenuation REM Alarm Choices differ depending upon mode of operation selections displayed in the following figure apply to drop and insert operation and would not appear for ch...

Page 171: ... Size 8 12 24 24 System ID 0 System Label Set System Date and Time Y Yes N No N Set T1 Alarm Processing Y Yes N No N Jitter Attenuator 1 Enable 2 Disable Enter 2 for disable unless known jitter is present Jitter Attenuator Depth 1 28 UI 2 120 UI 1 REM Alarm 1 Pass Thru 2 Block 2 Apply Changes Y Yes N No Y N N Figure 4 60 Setting System Operation Parameters ...

Page 172: ...functions or if the connection between the CCU and MCU sub board is defective the sub board will revert to its 9600 bps default data rate Any error messages that occur in such an event will be at 9600 bps Note The warning screen indicates that after changing the data rate for the D I Mux III the terminal data rate has to be changed The D I Mux III and control terminal data rates must be the same t...

Page 173: ...rce 10 29 25 Transmit Clock Sources 03 08 96 Drop Insert Loop Timing Alarm Condition T1 1 Clock T1 2 Clock No Alarm Rcvd T1 2 Rcvd T1 1 LOC T1 2 Internal Rcvd T1 1 Rcvd T1 1 LOC T1 1 Rcvd T1 2 Rcvd T1 2 Internal LOC T1 1 2 Internal Internal Choices Current Alarm Condition T1 2 LOC Alarm Clock Source I Internal 1 Rcvd T1 1 1 T1 1 LOC Alarm Clock Source I Internal 2 Rcvd T1 2 I Apply Changes Y Yes N...

Page 174: ...ot 2 Rcvd T1 2 and DB 9 must be in multiples of 1 600 Hz from 8 000 1 544 000 Hz SS Set Clock Source 10 29 25 Transmit Clock Sources 03 08 96 Channel Bank Local Timing Alarm Condition T1 1 Clock No Alarm Internal LOC T1 2 Slot 2 DB 9 Rcvd T1 2 LOC T1 1 Internal Choices Current Alarm Condition T1 2 LOC Alarm Clock Source I Internal S Ext Slot 2 D Ext DB 9 2 Ext Rcvd T1 2 I Apply Changes Y Yes N No ...

Page 175: ...racters Map 3 Enter Type A Alarm E Event T Time M Manual T Enable Map Y Yes N No Y One Time Use Y Yes N No Y N Days of Week Currently Mon 1 Mon 2 Tue 3 Wed 4 Thu 5 Fri 6 Sat 7 Sun Everyday 1 Hours 0 23 10 Minutes 0 59 50 Figure 4 64 Setting Editing the Map Table SW Setting Installing CCU Passwords ...

Page 176: ...he install password screen Level 3 access permits only system monitoring The main menu screen for a Level 3 user only shows the display options Note Once established the Level 1 password takes precedence Be careful not to lose this password write it down and place it in a secure location It is required for maximum control of the system If the password is lost the shelf must be reset to factory def...

Page 177: ...s is the physical address of the line card node assigned by Coastcom during manufacture The MAC Address serves as a unique line card identifier even if no Internet protocol is assigned or if differing protocols are attempting communication IP Address Internet Protocol Initially set by Coastcom prior to shipment as a special loopback test address only an IP Address change is required for network op...

Page 178: ...teway None SLIP Parameters Local IP Address 130 1 10 98 Peer IP Address 130 1 10 15 MTU 1006 Data Rate 9600 Figure 4 67 Viewing the Network Parameters VP Viewing Passwords From the MCU Main Menu use the VP command to View Passwords as shown in Figure 4 68 VP 15 13 37 Passwords 06 08 95 Level Password 1 1 test1 2 3 test3 3 2 test2 4 5 6 7 8 Figure 4 68 Viewing Passwords ...

Page 179: ...ompletion of the display when the CCU Status message reads Executing program the system has returned to normal operation VR 17 02 28 Revision Levels 06 08 96 MCU System Software Rev 1 3 CCU Permanent Loader Rev 1 3 CCU Program available to load Rev 1 3 CCU Program now loaded on CCU Rev 1 3 CCU Status Initializing VR 17 02 44 Revision Levels 06 08 95 MCU System Software Rev 1 3 CCU Permanent Loader...

Page 180: ... history file that alarms have been reset as reflected in the Display Alarm History DH screen Figure 4 13 Figure 4 70 depicts the ZA sequence screen ZA Zero Alarm Counts Y Yes N No Y N Y Figure 4 70 Clearing Alarm Counts ZH Clearing Alarm History When finished with previous alarm log data enter ZH to Zero clear the alarm History of all alarms as depicted in Figure 4 71 ZH Clear Alarm History Y Yes...

Page 181: ...gnostics should be the first approach to troubleshooting the system and network However an understanding of the various alarms modes of operation Dual DSX 1 Interfaces and loopback capabilities is essential before any diagnostics can be performed Diagnostic capabilities change depending upon the type of T1 interface installed in the D I Mux III The basic and Dual Enhanced DSX 1 Interface units are...

Page 182: ... faulty circuit card or incorrect programming within the Dl I Mux III system Yellow Alarm The Yellow Remote Alarm YEL LED illuminates if a failure is detected at the far end T1 system In such an event the remote system sends a remote Yellow alarm signal to the local D I Mux III The received remote alarm signal also signifies a T1 failure with potential causes as indicated above under Local Alarm C...

Page 183: ...anel They are listed and described as follows RX The Receive RX LED illuminates whenever the LIUs receive a loop code via the T1 span This function only works if the D I Mux III has a CSU Model 30318 xxx installed TX The Transmit TX LED illuminates whenever the D I Mux III sends a remote loop code from the LIUs As with the RX Loop Code Alarm this function only works when a CSU Model 30318 xxx is i...

Page 184: ...itiation Bypass Button The Bypass BYP button forces both T1 1 and T1 2 to bypass a D I Mux III that is in the drop and insert mode while in a major alarm and following Alarm Cut Off ACO Bypass permits the T1s to go through the system unaltered as if the D I Mux III were not in the T1 transmission path The bypass function only operates in the drop and insert mode Bypass Bypass can function only whe...

Page 185: ...tion switch power up The system auto configures from the LIU A Strobe and line card option switches A matrix map is constructed from the line card switch options and is placed in the Map 1 location Map 1 is then made the new working map Line cards are given bandwidth on a first come first served basis starting with card slot one If a line card requests bandwidth that is not available none is assig...

Page 186: ...l alarms indicating unframed all ones Possible causes include a downstream problem with the carrier the Smart Jack is in loopback or carrier D I Mux III is not transmitting a T1 signal out To test put a loop on the D I Mux III T1 interface If no problems are found the problem is with the carrier R Y R R R Carrier or far end has initiated a remote loop CSU is in loopback To clear access Operate Dia...

Page 187: ... 2 connector 5 Move the loopback plug from T1 1 to the T1 2 connector and note the readings on the T1 2 LIU If the D I Mux III remains in alarm go to Board Level Troubleshooting Board Level Troubleshooting Perform the following procedures after a failure has been isolated to the D I Mux III system Failures affecting all channels are usually in the common equipment units Typical common equipment fa...

Page 188: ...ailure light Removal of the shorted card will allow the voltages to restore themselves and will extinguish the power supply FAIL LED 9 Check the D I Mux III system software programming using the Display line Card configuration DC Display system Parameters DP and related commands Common Equipment and Line Card Testing The primary method of isolating trouble in the D I Mux III line cards is by repla...

Page 189: ...This section contains illustrations of the Line Interface Unit LIU front panels refer to Figure 5 1 and a description of the LIU Light Emitting Diode LED indications see Table 5 3 Figure 5 1 Line Interface Units Front Panels P N 30309 104A and 30309 114A ...

Page 190: ...l FRM Framing errors on incoming T1 Major B7 Bit 7 stuffing active Informational BPV BPVs above threshold shown on ERT screen refer to Chapter 4 Minor 0 DEN More than 32 consecutive zeros on incoming T1 Major AIS Receiving Alarm Indication Signal unframed all ones Major LP Codes Description Classification RX Network loop code being received Informational TX Network loop code being transmitted Info...

Page 191: ...ment can access and monitor signals through the jackfield See Figure 5 4 for a jackfield explanation The Dual CSU Interface Unit P N 30318 10X has the capability to perfomr local and remote software loopbacks without cables or loopback connectors However the Dual CSU Interface also has a jackfield which allows for hardware testing with bantam cables and plugs To test Channel Service Unit CSU circu...

Page 192: ...Chapter 5 Diagnostics 172 Figure 5 2 DB 15 Male T1 Loopback Connector Figure 5 3 RJ 48 T1 Loopback Connector ...

Page 193: ...l CSU Interface is helpful when performing T1 transmission testing Refer to Figures 5 4 and 5 5 for details on the operation of the jackfields T1 test equipment usually accesses the system and network through a jackfield Figure 5 4 Dual Enhanced DSX 1 Interface Jackfield Block Diagram part number 30118 102 ...

Page 194: ...Chapter 5 Diagnostics 174 Figure 5 5 Dual CSU Interface Jackfield Block Diagram part numbers 30318 101 30318 102 30318 103 ...

Page 195: ...ooped at the Dual Enhanced DSX 1 Interface T1 interface by connecting A OUT to B IN T1 is looped on the Dual CSU Interface CSUIF by connecting EQ IN to EQ MON All alarms should clear time out in approximately 12 5 seconds Alarms are timed out when all LEDs on the Line Interface Units LIUs are unlit The alarms time out when T1 timing and framing are synchronized and operating normally in the D I Mu...

Page 196: ...ntrol terminal local T1 1 alarm message clears immediately and the LIU B CGA alarm message clears after timing out Alarms in End to End Test Note This test requires a Dual Enhanced DSX 1 Interface or a Dual CSU Interface 1 Connect two D I Mux III systems together in a point to point network configuration The T1 Transmit of one of the systems will go to the T1 Receive of the other Both systems shou...

Page 197: ... T1 inputs for both T1 1 and T1 2 2 Configure the D I Mux III for drop and insert mode Make certain the network has one timing master source with one locally internally timed and one channel bank loop timed 3 Shut off the AC power supply The two other channel banks or multiplexers in the link should not go into alarm and communications should continue between the two If an alarm condition arises t...

Page 198: ...yload Each software controlled loopback is available in every mode Single channel bank Drop and insert Dual channel bank Remote and line loopbacks test the transmission lines from the local D I Mux III to the far end Payload loopback tests some of the internal functions of the D I Mux III In single channel bank operation remote loopback from the local D I Mux III is initiated either by entering a ...

Page 199: ...acks Refer to the software diagnostics portion of this chapter for instructions on how to initiate and remove these loopbacks Channel Bank Normal Operation In normal channel bank operation only the T1 1 connection to the D I Mux III shelf is used The Dual CSU Interface routes incoming Pulse Code Modulation PCM from span B to the input of LIU B and sends PCM from the output of LIU A to the output o...

Page 200: ... mode the PCM span B input path to LIU B is broken and replaced with the output from LIU A From the output of LIU B an Alarm Indication Signal AIS is sent to the output of span A The bypass operation is represented in Figure 5 8 Figure 5 8 Channel Bank Bypass Operation ...

Page 201: ...e opposite span s output Figure 5 9 illustrates PCM looping back from span A s output as a result of a Line Loop Set code received by span B s input PCM is also passed on to the LIU B input even though the LIUs are not in the PCM path T1 line receivers and line buildouts are kept in the PCM loop to maintain the proper T1 line levels Figure 5 9 shows the path of the line loopback signal Figure 5 9 ...

Page 202: ...ayload loopback the LIUs are included in the data path Incoming PCM from span B is sent to the input of LIU B then from the output of LIU B to the input of LIU A and finally from the output of LIU A to the output of span A as depicted in Figure 5 10 PCM from the output of LIU B is blocked Figure 5 10 Channel Bank Payload Loopback ...

Page 203: ...to the input of LIU A and PCM from the output of LIU A is sent to the output of span A That is PCM coming in on span A is sent out on span A and PCM coming in on span B is sent out on span B Channels from either span can be dropped received or inserted sent on the appropriate line card of the D I Mux III D I Mux III circuits can be inserted into either T1 span Drop and insert in normal operation i...

Page 204: ...vers and line buildouts are left in line to provide the correct levels on the T1 line Within the D I Mux III shelf the output of LIU B is connected to the input of LIU A and the output of LIU A is connected to the input of LIU B as illustrated in Figure 5 12 This allows the D I Mux III to frame on itself providing an internal operational check Figure 5 12 Drop and Insert Bypass ...

Page 205: ... to maintain the proper T1 line levels In line loopback the PCM is looped before reaching the LIUs Drop and Insert T1 1 Line Loopback Line Loop Set code received on the input of span B causes span B input PCM to be looped back out span A before reaching the LIUs as well as passing it on to the input of LIU B Output PCM from LIU B is sent to the output of span B PCM from the input of span A is unaf...

Page 206: ...s span A input PCM to be looped back out span B before reaching the LIUs as well as passing it on to the input of LIU A Output PCM from LIU A is sent to the output of span A PCM from the input of span B is unaffected as shown in Figure 5 14 The output of LIU B is blocked Figure 5 14 Drop and Insert T1 2 Line Loopback ...

Page 207: ... well as being passed on to the input of LIU B The PCM from the output of the LIU A is blocked Line Loop Set code received on span A input causes PCM to be looped back out span B s output as well as being passed on to the input of LIU A The PCM from the output of LIU B is blocked as illustrated in Figure 5 15 Figure 5 15 Drop and Insert T1 1 and T1 2 Line Loopback ...

Page 208: ...In payload loopback the loopback occurs after rather than before the LIUs Drop and Insert T1 1 Payload Loopback Incoming PCM from span B is sent to the input of LIU B then from the output of LIU B to the input of LIU A and finally from the output of LIU A to the output of span A PCM from the output of LIU B is also sent to the output of span B Detail is depicted in Figure 5 16 Figure 5 16 Drop and...

Page 209: ...an A is sent to the input of LIU A then from the output of LIU A to the input of LIU B and finally from the output of LIU B to the output of span B PCM from the output of LIU A is also sent to the output of span A Reference Figure 5 17 Figure 5 17 Drop and Insert T1 2 Payload Loopback ...

Page 210: ...n B to the input of LIU B and sends PCM from the output of LIU B to the output of span B Incoming PCM from span A is sent to the input of LIU A and PCM from the output of LIU A is sent to the output of span A The paths through both LIUs are blocked so information cannot pass through the system See detail in Figure 5 18 Figure 5 18 Dual Channel Bank Normal Operation Dual Channel Bank Bypass Bypass ...

Page 211: ...ne buildouts are kept in the PCM loop to maintain the proper T1 line levels In line loopback the PCM is looped before reaching the LIUs Dual Channel Bank T1 1 Line Loopback Line Loop Set code received on the input of span B causes PCM to be looped back out the output of span A Output PCM from LIU B is sent to the output of span B PCM from the input of span A and the output of LIU A are blocked See...

Page 212: ...ode received on the input of span A causes PCM to be looped back out the output of span B Output PCM from LIU A is sent to the output of span A PCM from the input of span B and the output of LIU B are blocked Reference Figure 5 20 Figure 5 20 Dual Channel Bank T1 2 Line Loopback ...

Page 213: ...IUs as well as being passed on to the input of LIU B The PCM from the output of LIU B is blocked Line Loop Set code received on span A input causes PCM to be looped back out span B s output before the LIUs as well as being passed on to the input of LIU A The PCM from the output of the LIU A is blocked See Figure 5 21 for details Figure 5 21 Dual Channel Bank T1 1 and T1 2 Line Loopback ...

Page 214: ...from span B T1 1 is sent to the input of LIU B The output of LIU B is looped to the input of LIU A The output of LIU A is sent out on span A T1 1 The input from span A T1 2 is blocked as is the output path to span B T1 2 In other words the T1 2 side of the D I Mux III is now disconnected from the network The LIUs are configured to allow data input on span B T1 1 to be output on span A T1 1 The dat...

Page 215: ... T1 2 The input from span B T1 1 is blocked as is the output path to span A T1 1 In other words the T1 1 side of the D I Mux III is now disconnected from the network The LIUs are configured to allow data input on span A T1 2 to be output on span B T1 2 The data input on span A T1 2 will be dropped to both T1 1 and T1 2 line cards See Figure 5 23 for details Figure 5 23 Dual Channel Bank T1 2 Paylo...

Page 216: ...em Examples are included for diagnostics and performance monitoring OL Operate Line Card Diagnostics Enter OL to display the Operate Line card diagnostics screen on a specific line card as depicted in Figure 5 24 Refer to the related line card user manual for the specific options on individual line cards OL Slot Number 1 Slot 1 Is Empty Figure 5 24 Operating Line Card Diagnostics Screen ...

Page 217: ...cs 02 01 96 CSU Loopback Normal T1 1 0 Clear Loopback 2 Set PAYLOAD Loopback 4 Set LINE Loopback 6 Send REM Loop up 8 Send REM Loop down Shelf Controls C Bypass E Reset Common Line Cards D Unbypass F Unloop Line Cards G Shelf Restart O Acknowledge ACO H Display Alarms Q Quit Warning Ensure that a network clock source is provided for the T1 port under test Are You Sure Y Yes N No Y N Figure 5 25 Ch...

Page 218: ...pback Normal T1 1 T1 2 0 1 Clear Loopback 2 3 Set PAYLOAD Loopback 4 5 Set LINE Loopback 6 7 Send REM Loop up 8 9 Send REM Loop down Shelf Controls C Bypass E Reset Common Line Cards D Unbypass F Unloop Line Cards G Shelf Restart O Acknowledge ACO H Display Alarms Q Quit Warning Ensure that a network clock source is provided for the T1 port under test Are You Sure Y Yes N No Y N Y Figure 5 26 Dual...

Page 219: ...rate Diagnostics 06 25 96 T1 Interface Normal Shelf Controls C Bypass E Reset Common Line Cards D Unbypass F Unloop Line Cards G Shelf Restart O Acknowledge ACO H Display Alarms Q Quit Warning Ensure that a network clock source is provided for the T1 port under test Are You Sure Y Yes N No Y N Y Figure 5 27 Dual DSX 1 Interface Mode Operate Diagnostics Screen ...

Page 220: ... 96 Select Direction Select Side AT T ANSI A T1 1 D User G AT T B T1 2 E Network H ANSI C Both F Both I Both T1 1 User AT T ANSI T1 1 None T1 2 Screen Reports Clear Counters Printer Reports 0 Current Status 4 ESF Errors 6 ESF Error Counts 1 1 Hour 5 Others 7 1 Hour 2 24 Hour 8 24 Hour 3 ANSI 9 ANSI Logging of Network Messages Network May Reset User Counters L Disable P Disable M Enable With Data R...

Page 221: ... initiate a change in the network through system or network software The alarm feature can be disabled Figure 5 29 illustrates a Set CRC ERT Alarm screen Refer to Chapter 4 Configuration and Operation for further detail on setting the bit error rate SB 17 20 41 Set CRC ERT Alarm 06 25 92 Alarm ERT Set Pt Resolution Status T1 1 0E 4 9E 1 1E 4 3 Secs Disabled T1 2 0E 4 9E 1 1E 4 3 Secs Disabled CRC ...

Page 222: ...d again Invalid Command for Password This level password excludes use of the entered command Log out then enter the correct level password that allows use of the entered command See Chapter 4 Configuration and Operation for a description of password levels and the commands allowed at each level Invalid DS0 Range 1 24 Either the DS0 range was outside the range of 1 to 24 or the first number of the ...

Page 223: ...rently the working map Normally when a second alarm map is enabled the first alarm map is disabled unless it is the working map Change the first alarm map so that it is not the working map Then try again to change the status of the second alarm map to Enabled Original Event Map Working Only one event map can be enabled at a time Another event map is already enabled and its status cannot be changed...

Page 224: ...d event map is enabled the first event map s status is changed from Enabled to Disabled Informational message Make corrections and retry Two Time Maps Cannot Be Enabled Only one time map can be enabled at a time When a second map is enabled the first map s status is changed from Enabled to Disabled Informational message Make corrections and retry Two Time Maps With The Same Time Not Allowed Self e...

Page 225: ...uted from T1 1 to T1 2 as a result of a span failure ALPS T1 2 Loop Major Yes Yes Data rerouted from T1 2 to T1 1 as a result of a span failure ALPS Pass Thru Minor Yes Yes Both spans in use as a result of a span failure elsewhere in the network T1 1 BER Alarm Minor Yes Yes Bit Error Rate on a T1 1 span exceeds threshold T1 2 BER Alarm Minor Yes Yes Bit Error Rate on a T1 2 span exceeds threshold ...

Page 226: ...local LIU REMOTE Loop Info No No T1 span is looped back towards the network Message at the looped end CLOCK Change Info No Yes Reports a clock change event RCVD Clk Freq Err Info No Yes The recovered clock shifted from the Stratum 4 clock specifications INT Clk Freq Err Info No Yes The internal clock shifted from the Stratum 4 clock specifications EXT2 Clk Freq Err Info No Yes Slot 2 clock shifted...

Page 227: ...D I Mux III User s Manual Appendix A D I Mux III Specifications APPENDIX A D I MUX III SPECIFICATIONS ...

Page 228: ...balanced 10 ohms T1 Connections DB 15F RJ 48 Network Transmit Equalization DSX 1 150 feet Standard 0 750 feet Option Transmit Line Build Out CSU 0 0 dB 7 5 dB 15 0 dB Network Compatibility AT T Accunet T1 5 Maximum Bandwidth 1 344 Mbps 56 Kbps DS0 1 536 Mbps 64 Kbps DS0 Data Port Interfaces 8 12 or 24 Data Ports V 35 RS 422 RS 232C Switch selectable EIA control lines Compatible with DEC DMR11 V 54...

Page 229: ...each for audible visual and minor alarms LIU Alarm Indicators Local alarm LOC Remote alarm YEL Carrier Group Alarm CGA Receive framing errors FRM Bit 7 stuffing selected B7 Receiving excessive bipolar violations BPV Receiving more than 32 consecutive zeros 0 DEN Alarm indication signal AIS Network loop code received RX Network loop code transmitted TX Power DC Power Supply 48 V Voltage Input 44 to...

Page 230: ... SDCU Synchronous Data Channel Unit 56 64 Kbps 56 64 x N Kbps OCUDP Office Channel Unit Data Port 2 4 4 8 9 6 56 Kbps 4 Wire DDS Switched 56 Kbps Voice Line Cards 4 Wire E M PLR Signaling ADPCM TO SCG 2 Wire FXS FXO PLAR TO Megacom 800 DPO DPT Special Service Cards SOS Smart Omni orderwire Station Voice Service Channel DPC Digital Program Channel High Fidelity Audio Channel MXS MXO FXS FXO for Nor...

Page 231: ...hes 10 50 Inches Environmental Voice Only 0 C to 55 C 0 C to 50 C 0 C to 55 C Data 0 C to 50 C 0 C to 45 C 0 C to 50 C Storage 20 C to 60 C 20 C to 60 C 20 C to 60 C Humidity Up to 95 non condensing Altitude 15 000 Feet 4 5 km above sea level Approvals FCC Part 15 Subpart B Class A FCC Part 68 Complies with applicable sections of AT T Publications 43801 54018 62310 54075 Complies with applicable s...

Page 232: ...D I Mux III User s Manual Appendix B 24 Volt Systems 212 APPENDIX B 24 VOLT SYSTEMS ...

Page 233: ... for Talk Battery also requires a 24 V External Ringing Generator Coastcom does not include a 24 V External Ringing Generator in its product list Tellabs model 8102 has a 24 48 V option switch Contact Tellabs directly at 708 969 8800 The 2 Wire FXS 650 ohm maximum has a limited distance range when used in 24 V systems Allow for one half the cabling distance 30058 001 C1SDCU The C1DCU Control Unit ...

Page 234: ...D I Mux III User s Manual Appendix C Accessories Installation APPENDIX C ACCESSORIES INSTALLATION ...

Page 235: ... the D I Mux III shelf External AC Power Supply The External AC Power Supply P N 0400 0035 can supply up to ten 10 Amps of current at 48 V DC The External AC Power Supply has protection circuitry a short or surge on the output will cause the supply to shut down Add a fuse panel if several multiplexers are to be supplied with 48 V DC This provides individually fused power circuits to each multiplex...

Page 236: ...voltage is hazardous Make all connections with power Off 1 Connect pin 1 on the ring generator to chassis ground on the D I Mux III multiplexer backplane 2 Connect pin 2 on the ring generator to positive ground on the D I Mux III multiplexer backplane 3 Connect pin 3 on the ring generator to 48 V DC battery on the D I Mux III backplane 4 Connect pin 4 to pin 3 both on the ring generator to bias th...

Page 237: ...D I Mux III User s Manual Appendix D Preconfigured Maps APPENDIX D PRECONFIGURED MAPS ...

Page 238: ... Strobe card option switches in the Set shelf Configuration SC screen When given the choice of either a Nonvolatile Random Access Memory NVRAM or Strobe card option shelf configuration select the Strobe option by typing SC then select O for Strobe Card Option Switches as depicted in Figure D 1 SC Enter Shelf Configuration Setting after Power Cycle N NVRAM O Strobe Card Option Switches N O Figure D...

Page 239: ...e strobe switches Strobe Option Switch 1 24 Card Slots 64 Kbps per Slot Rows represent card slots and columns represent timeslots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 TR 2 TR 3 TR 4 TR 5 TR 6 TR 7 TR 8 TR 9 TR 10 TR 11 TR 12 TR 13 TR 14 TR 15 TR 16 TR 17 TR 18 TR 19 TR 20 TR 21 TR 22 TR 23 TR 24 TR ...

Page 240: ...s per Slot Rows represent card slots and columns represent timeslots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 A TR 1 B TR 2 A TR 2 B TR 3 A TR 3 B TR 4 A TR 4 B TR 5 A TR 5 B TR 6 A TR 6 B TR 7 A TR 7 B TR 8 A TR 8 B TR 9 A TR 9 B TR 10 A TR 10 B TR 11 A TR 11 B TR 12 A TR 12 B TR ...

Page 241: ...13 14 15 16 17 18 19 20 21 22 23 24 1 TR TR 2 TR TR 3 TR TR 4 TR TR 5 TR TR 6 TR TR 7 TR TR 8 TR TR 9 TR TR 10 TR TR 11 TR TR 12 TR TR Strobe Option Switch 4 8 Card Slots 192 Kbps per Slot Rows represent card slots and columns represent timeslots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 TR TR TR 2 TR TR TR 3 TR TR TR 4 TR TR TR 5 TR TR TR 6 TR TR TR 7 TR TR TR 8 TR TR TR ...

Page 242: ...7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 TR TR TR TR TR TR 2 TR TR TR TR TR TR 3 TR TR TR TR TR TR 4 TR TR TR TR TR TR Strobe Option Switch 7 3 Card Slots 512 Kbps per Slot Rows represent card slots and columns represent timeslots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 TR TR TR TR TR TR TR TR 2 TR TR TR TR TR TR TR TR 3 TR TR TR TR TR TR TR TR Strobe Option Sw...

Page 243: ...D I Mux III User s Manual Appendix E SNMP APPENDIX E SNMP ...

Page 244: ...mming commands allowing SNMP to function The formal method for writing a MIB is called ASN 1 and has been published by the CCITT SNMP uses two primary ASN 1 constructs octet strings and integers or whole numbers Octet strings are used to form ASCII text while integers are used for SNMP V1 These integers are further broken down into special cases of integers gauges counters and time ticks Integers ...

Page 245: ...D I Mux III User s Manual Appendix F MIB II and DS1 MIB Group Names and Objects APPENDIX F MIB II AND DS1 MIB GROUP NAMES AND OBJECTS ...

Page 246: ...object type The syntax of an object type defines the abstract data structure corresponding to that object type The ASN 1 language is used for this purpose However the SMI 12 purposely restricts the ASN 1 constructs that may be used These restrictions are made for simplicity The encoding of an object type is simply how that object type is represented using the object type s syntax The object type s...

Page 247: ... of this node e g telephone closet 3rd floor sysServices A value which indicates the set of services that this entity primarily offers Interface Group ifNumber The number of network interfaces regardless of their current state present on this system IfTable A list of interface entries The number of entries is given by the value of ifNumber ifIndex A unique value for each interface ifDescr A textua...

Page 248: ...iverable to a higher layer protocol ifInErrors The number of inbound packets that contained errors preventing them from being deliverable to a higher layer protocol ifInUnknownProtos The number of packets received via the interface which were discarded because of an unknown or unsupported protocol ifOutOctets The total number of octets transmitted out of the interface including framing characters ...

Page 249: ...stination field was not a valid address to be received at this entity ipForwDatagrams The number of input datagrams for which this entity was not their final IP destination as a result of which an attempt was made to find a route to forward them to that final destination ipInUnknownProtos The number of locally addressed datagrams received successfully but discarded because of an unknown or unsuppo...

Page 250: ...ent flag was set ipFragCreates The number of IP datagram fragments generated as a result of fragmentation at this entity ipAddrTable The table of addressing information relevant to this entity s IP addresses ipAddrEntry The addressing information for one of this entity s IP addresses ipAdEntAddr The IP address to which this entry s addressing information pertains ipAdEntIfIndex The index value whi...

Page 251: ...of seconds since this route was last updated or otherwise determined to be correct ipRouteMask Indicate the mask to be logical ANDed with the destination address before being compared to the value in the ipRouteDest field ipRouteMetric5 An alternate routing metric for this route ipRouteInfo A reference to MIB definitions specific to the particular routing protocol which is responsible for this rou...

Page 252: ...e number of ICMP Redirect messages received icmpInEchos The number of ICMP Echo request messages received icmpInEchoReps The number of ICMP Echo Reply messages received icmpInTimestamps The number of ICMP Timestamp request messages received icmpInTimestampReps The number of ICMP Timestamp Reply messages received icmpInAddrMasks The number of ICMP Address Mask Request messages received icmpInAddrMa...

Page 253: ...m The timeout value algorithm used to retransmit unacknowledged octets tcpRtoMin The minimum value permitted by a TCP implementation for the retransmission timeout measured in milliseconds tcpRtoMax The maximum value permitted by a TCP implementation for the retransmission timeout measured in milliseconds tcpMaxConn The limit on the total number of TCP connections the entity can support tcpActiveO...

Page 254: ...ly transmitted octets tcpConnTable A table containing TCP connection specific information tcpConnEntry Information about a particular current TCP connection tcpConnState The only value which may be set by a management station is deleteTCB 12 tcpConnLocalAddress The local IP address for this TCP connection tcpConnLocalPort The local port number for this TCP connection tcpConnRemAddress The remote I...

Page 255: ...rsion snmpInBadCommunityNames The total number of SNMP Messages delivered to the SNMP protocol entity which used an SNMP community name not known to said entity snmpInBadCommunityUses The total number of SNMP Messages delivered to the SNMP protocol entity that represented an SNMP operation not allowed by the SNMP community named in the Message snmpInASNParseErrs The total number of ASN 1 or BER er...

Page 256: ...tal number of SNMP Set Request PDUs accepted and processed by the SNMP protocol entity snmpInGetResponses The total number of SNMP Get Response PDUs accepted and processed by the SNMP protocol entity snmpInTraps The total number of SNMP Trap PDUs accepted and processed by the SNMP protocol entity snmpOutTooBigs The total number of SNMP PDUs generated by the SNMP protocol entity and for which the v...

Page 257: ... The total number of SNMP Set Request PDUs generated by the SNMP protocol entity snmpOutGetResponses Total number of SNMP Get Response PDUs generated by the SNMP protocol entity snmpOutTraps The total number of SNMP Trap PDUs generated by the SNMP protocol entity snmpEnableAuthenTrap Indicates whether the SNMP agent process is permitted to generate authentication failure traps ...

Page 258: ...ch in turn affects a number of its characteristics dsx1SendCode This variable indicates what type of code is being sent across the DS1 interface by the device dsx1CircuitIdentifier This variable contains the transmission vendor s circuit identifier to facilitate troubleshooting dsx1LoopbackConfig This variable represents the DS1 interface loopback configuration dsx1LineStatus This variable indicat...

Page 259: ...he current 15 minute interval dsx1CurrentPCVs The number of Path Coding Violations encountered by a DS1 interface in the current 15 minute interval dsx1CurrentLESs The number of Line Errored Seconds encountered by a DS1 interface in the current 15 minute interval dsx1CurrentBESs The number of Bursty Errored Seconds BESs encountered by a DS1 interface in the current 15 minute interval dsx1CurrentDM...

Page 260: ...he number of Path Coding Violations encountered by a DS1 interface in one of the previous 96 individual 15 minute intervals dsx1IntervalLESs The number of Line Errored Seconds encountered by a DS1 interface in one of the previous 96 individual 15 minute intervals dsx1IntervalBESs The number of Bursty Errored Seconds BESs encountered by a DS1 interface in one of the previous 96 individual 15 minute...

Page 261: ...s The number of Line Code Violations LCV encountered by a DS1 interface in the current 15 minute interval DS1 Far End Group NOTE Group unsupported at this time Noted here as a place holder only dsx1FarEndCurrentTable The DS1 Far End Current table dsx1FarEndCurrentEntry An entry in the DS1 Far End Current table dsx1FarEndCurrentIndex The index value which uniquely identifies the DS1 interface to wh...

Page 262: ...tes DMs encountered by a DS1 interface in the current 15 minute interval DS1 Far End Interval Table NOTE Group unsupported at this time Noted here as a place holder only dsx1FarEndIntervalTable The DS1 Far End Interval table dsx1FarEndIntervalEntry An entry in the DS1 Far End Interval table dsx1FarEndIntervalIndex The index value which uniquely identifies the DS1 interface to which this entry is a...

Page 263: ...6 individual 15 minute intervals dsx1FarEndIntervalDMs The number of Degraded Minutes DMs encountered by a DS1 interface in one of the previous 96 individual 15 minute intervals DS1 Far End Total Table NOTE Group unsupported at this time Noted here as a place holder only dsx1FarEndTotalTable The DS1 Far End Total table dsx1FarEndTotalEntry An entry in the DS1 Far End Total table dsx1FarEndTotalInd...

Page 264: ...val dsx1FarEndTotalBESs The number of Bursty Errored Seconds BES encountered by a DS1 interface in the previous 24 hour interval dsx1FarEndTotalDMs The number of Degraded Minutes DM encountered by a DS1 interface in the previous 24 hour interval DS1 Fractional Group NOTE Group unsupported at this time Noted here as a place holder only dsx1FracTable The DS1 Fractional table dsx1FracEntry An entry i...

Page 265: ...D I Mux III User s Manual Appendix G Modem Interfaces APPENDIX G MODEM INTERFACES ...

Page 266: ...and Set The Hayes Command Set is an ASCII interface used to control and configure the modem This command set is also known as the AT command set since the two characters AT are used to get the modem s attention Commands to the modem are prefixed with the attention string and are followed by a carriage return Special Coastcom Characters Special Coastcom programs incorporate several additional chara...

Page 267: ...acters The firmware in Coastcom s DXC II system also allows modem control strings to be configured as desired with special characters except that the DXC II does not insert BREAK signals Table I 1 gives various command set examples using the special characters noted above Table H 1 Command Examples Process Command String Description Possible Result Strings Setup Initialization AT E0 S0 1 Q1 V1 X4 ...

Page 268: ...er that follows to go on line This is one of the most frequently used modem commands A typical command sequence to make the modem dial might be ATDT 123 4567 This command sequence makes use of one of the dial modifiers available with the dial command and indicates that hyphens 0x2D and spaces 0x20 are legal and ignored in the dialing sequence The dial modifiers permitted are listed below Digits ch...

Page 269: ...ult codes Normally software depends on the modem to return command result codes so Q0 must be set This Hayes command set option is provided for those rare occasions when echo must be off Sr Sr n Sr Set pointer to address of register r Set register r to value n Display value stored in register r To assign a value to one of the Smartmodem s S registers e g to increase dialing speed to its maximum is...

Page 270: ...e divergence e g the UDS 3225 V 32 modem returns 901 While not completely reliable this method is most commonly used to determine the maximum supported speed Allow the user to override the software default determination L0 L1 L2 Low speaker volume Medium speaker volume High speaker volume This allows basic software speaker volume control O1 O2 Turn off the remote digital loop back test function an...

Page 271: ...Select Bell 212A communication standard M3 Speaker on until carrier is detected except during dialing O0 Go to on line state and initiate equalizer retrain X0 X1 X2 X3 X4 Enable features represented by result codes 0 4 Enable features represented by result codes 0 5 10 Enable features represented by result codes 0 6 10 Enable features represented by result codes 0 5 7 10 Enable features represente...

Page 272: ...nsition of DTR occurs As with the C0 command the factory default D0 is not the most logical choice and most software expects that lowering DTR hangs up the line Be sure to use D2 as part of the modem initialization sequence to avoid problems F Recall factory settings as active configuration G0 G1 G2 No guard tone 550 Hz guard tone 1800 Hz guard tone Some telephone systems require other than the de...

Page 273: ...e remote digital loop back Initiate remote digital loop back with self test Initiate local analog loop back with self test This set of commands provides a test suite of the local and remote connection V View active configuration user defined profiles and stored numbers This command allows viewing of the information stored in the modem s EEPROM W0 W1 Save storable parameters of active configuration...

Page 274: ...s modems They are listed and described in Table I 5 Table H 5 V Series Modem Commands Command Description N0 N1 Speed control Q2 Result code control W0 W1 Negotiation result control X0 X1 X2 X3 X4 Result code control see below K0 K1 K2 K3 Flow control L0 L1 Dial up line operation Conditioned lease line operation Q5 Error control mode ...

Page 275: ...mands Code Verbose X0 X1 X2 X3 X4 X5 X6 0 OK X X X X X X X 1 CONNECT X X X X X X X 2 RING X X X X X X X 3 NO CARRIER X X X X X X X 4 ERROR X X X X X X X 5 CONNECT 1200 X X X X X X 6 NO DIAL TONE X X X 7 BUSY X X X X 8 NO ANSWER Requires replaces NO CARRIER X X X X 9 Reserved 10 CONNECT 2400 X X X X X X 11 RINGING X X 12 VOICE X X FUNCTIONS Adaptive Dialing X X X X X Wait for 2nd Dial Tone W X X X ...

Page 276: ... selection of rings before answering Table I 7 lists and describes the S Register options Table H 7 Smartmodem S Registers S Register Description S0 n S0 0 Auto answer mode where n the number of rings before the modem answers OR 0 do not answer For other S registers refer to the particular modem s user manual ...

Page 277: ...en occurs before the called modem actually sees ringing This additional time can be as long as 10 to 15 seconds After answering the call and going off hook the two modems attempt to establish a carrier signal Various modulations will be tried until they either match or until the calling modem gives up If during one of the longer time periods either modem receives a character from its controlling p...

Page 278: ...ersions of the NCC software product family Making Connection Each of the components involved in the data transfer must be connected The sequence of those connections are listed below Port Coastcom s NCC5 program will first request the serial port from the system If the port is not available within several seconds the connection attempt will be aborted The NCC5 program will then initialize the port...

Page 279: ...ere is no response after sending the link command terminate the connection refer to the Terminating Connection Modem section below 4 If there is a LINK UNAVAILABLE response clear all possible connections using the following recommended command strings 0t r o PU01 0t r o PU02 0t r o PU08 5 Wait for a response for each unlink command 6 If a response of UNLINK DONE is received repeat step 1 in this s...

Page 280: ...r all possible connections using the following recommended command strings 0t r o PU01 0t r o PU02 0t r o PU08 6 Wait for a response for each unlink command 7 If a response of UNLINK DONE is received proceed to the next section 8 If a response of LINK UNAVAILABLE is received continue clearing all possible connections as indicated above 9 When all possible connections have been cleared proceed to t...

Page 281: ...onnections are listed as follows Port Because the D I Mux III and DXC II ports are dedicated ports no special connections need be made Port Expander If a port expander or other black box device has been configured into the network follow the steps listed below otherwise proceed to the next section 1 Send the link string to the port expander using the following recommended string command 0t r o PL0...

Page 282: ...ng during message processing is controlled by Coastcom s NCC5 and NCC6 programs when communicating with the D I Mux III system the NCC2 program does not switch alarm modes The program sends a Machine Machine Language MML command to disable alarm reporting thus allowing ASCII or MML data transmission reception to occur At the conclusion of message processing the program sends another MML command to...

Page 283: ...nse should appear within 3 seconds and continue Port Expander If a port expander or other black box device has been configured into the network follow the steps listed below otherwise proceed to the next section 1 Send the unlink command to the port expander using the following recommended command string 0t r o PU0x 2 Wait for any response should appear within 3 seconds then proceed to the next se...

Page 284: ...D I Mux III User s Manual Appendix H Set Report Options APPENDIX H SET REPORT OPTIONS ...

Page 285: ...ons configuration selection options The options include the following COMM mode Selects the desired communications mode options are either basic terminal control or Machine Machine Language MML control when Coastcom s Network Communications Controller NCC software product is used Display Modem Port expander configuration Displays the current modem and port expander set up Change Modem Configuratio...

Page 286: ...ed on the screen An alarm condition will interrupt and report to the Common Control Unit CCU control screens If the multiplexer is operating in a channel card screen at the time of the event the alarm will only be reported when a CCU alarm reporting screen is accessed If a Sound Bell is selected with a Y entry the terminal will beep during an alarm condition To prevent the terminal from beeping in...

Page 287: ...xpander conf M Change Modem Conf P Change Port Expander Conf Q Quit C COMM mode T Terminal M MML TERM T Alarm Reporting Mode T Terminal Alarm Reporting E Enable Modem Dial out O Off TERM DIALOUT DISABLED t Sound Bell Y Yes N No N n Current Mode TERM ALARM REPORTING Figure I 1 Setting Communications in Terminal Mode With Inaudible Terminal Alarm Reporting Screen ...

Page 288: ... Enable Modem Dial out or O Off Option E enables modem dial out An alarm condition will interrupt and report to the Common Control Unit CCU control screens Once all selections are made Current Mode displays again reflecting the selection Note that the modem requires configuration This is accomplished by returning to the SO command menu and selecting D Display Modem Port expander configuration see ...

Page 289: ...m Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit C COMM mode T Terminal M MML TERM T Alarm Reporting Mode T Terminal Alarm Reporting E Enable Modem Dial out O Off TERM DIALOUT DISABLED e Current Mode TERM DIALOUT ALARM REPORTING Modem Requires Configuration Figure I 2 Setting Communications in Terminal Mode With Modem Dial Out ...

Page 290: ...g mode include T Terminal Alarm Reporting E Enable Modem Dial out or O Off Option O turns off alarm reporting The terminal will still detect and record alarms but will not interrupt the operation of the Common Control Unit CCU Once all selections are made Current Mode displays again reflecting the selection Feature Group 6 0 6 2 Screen Changes The 6 0 6 2 Feature Group COMM Mode selections were la...

Page 291: ...Display Modem Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit C COMM mode T Terminal M MML TERM T Alarm Reporting Mode T Terminal Alarm Reporting E Enable Modem Dial out O Off TERM DIALOUT ENABLED o Current Mode TERM NO ALARM REPORTING Figure I 3 Setting Communications in Terminal Mode With Alarm Reporting Turned Off ...

Page 292: ...ion to appear is the Alarm Reporting Mode The choices for alarm reporting mode include E Enable Modem Dial out or D Disable Modem Dial out Option E enables modem dial out causing an alarm condition to interrupt and report to the Common Control Unit CCU control screens Once all selections are made Current Mode displays again reflecting the selection Note that the modem requires configuration This i...

Page 293: ...Modem Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit C COMM mode T Terminal M MML TERM m Alarm Reporting Mode E Enable Model Dial out D Disable Modem Dial out MML DIALOUT DISABLED e Current Mode MML DIALOUT ALARM REPORTING Modem Requires Configuration Figure I 4 Setting Communications in MML Mode With Modem Dial Out Enabled ...

Page 294: ...led by MML versus a terminal The next option to appear is the Alarm Reporting Mode The choices for alarm reporting mode include E Enable Modem Dial out or D Disable Modem Dial out Option D disables modem dial out preventing an alarm condition from interrupting or reporting to the Common Control Unit CCU Once all selections are made Current Mode displays again reflecting the selection Feature Group...

Page 295: ...M mode D Display Modem Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit C COMM mode T Terminal M MML TERM m Alarm Reporting Mode E Enable Model Dial out D Disable Modem Dial out MML DIALOUT DISABLED d Current Mode MML NO ALARM REPORTING Figure I 5 Setting Communications in MML Mode With Modem Dial Out Enabled ...

Page 296: ...ions SO command sequence screen permitting selection of the D Display Modem Port Expander Configuration option SO Current Mode TERM NO ALARM REPORTING Communication Configuration C COMM mode D Display Modem Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit d Figure I 7 Display Modem and Port Expander Configuration Screen ...

Page 297: ... Expander Present No NCC Port 0 Port 1 Attention String 1t r o P Link String L Link Response LINK ESTABLISHED Unlink String U Unlink Response UNLINK DONE Modem Present No Phone Number Attention String ATH Init String ATE0S0 1Q1V1X4 C0 D0 Press Enter to Continue Current Mode TERM NO ALARM REPORTING Figure I 8 Display Modem and Port Expander Configuration Screen Feature Group 6 0 6 2 Screen Changes ...

Page 298: ... selection to be made is the number of seconds to elapse prior to hanging up the modem after the last message is sent This time period is called the time out The number of seconds selected may be any number between 3 and 127 The next selection in modem configuration is to inform the system of modem status do you have a modem Respond either Y Yes or N No as appropriate At the next prompt enter the ...

Page 299: ... m Intervals Between Call Attempts In Minutes 3 127 3 Last Message Time Out In Seconds 3 127 20 Do You Have A Modem Y Yes N No y Phone Number 501 555 1234 Modem Attention String AT Modem Dial String Q0DT Modem Hang up String Use For delay 1 2 second Use For Return Key ATH Modem Init String Use For Return Key ATE0S0 1Q1V1X4 C0 D0 Figure I 9 Modem and Port Expander Configuration Option Screen ...

Page 300: ...esired press N and Enter and all settings will remain as previously set After saving the settings the screen prompts to Press Enter to Continue after which the Current Mode for alarm reporting will again display Figure J 10 depicts the modem configuration settings display screen 16 49 27 Alarm Dial Out 11 30 96 Interval Between Calls 3 mins Last Message Time Out 20 secs Modem Present Yes Phone Num...

Page 301: ...ppropriate The screen will then prompt for entry of the applicable Network Communications Controller NCC control port connection followed by the applicable port expander port number The next five entries specify the Port Expander Attention String the Port Expander Link String the Port Expander Link Response the Port Expander Unlink String and the Port Expander Unlink Response String In each case t...

Page 302: ...ange Port Expander Conf Q Quit p Do You Have A Port Expander Y Yes N No N y NCC Port 0 9 0 Port Expander Port 0 16 1 Port Expander Attention String lt r o P Port Expander Link String L Port Expander Link Response LINK ESTABLISHED Port Expander Unlink String U Port Expander Unlink Response String UNLINK DONE Figure I 11 Port Expander Configuration Options Screen ...

Page 303: ...tions are those desired press Y and Enter to save all configuration settings If other changes are desired press N and Enter and all settings will remain as previously set Figure J 12 depicts the port expander configuration settings display screen 16 49 38 Alarm Dial Out 11 30 96 Port Expander Present Yes NCC Port 0 Port 1 Attention String 1t r o P Link String L Link Response LINK ESTABLISHED Unlin...

Page 304: ...available whenever this menu displays To quit simply press Q and Enter After quitting the D I Mux III main menu may be accessed by pressing M and Enter Figure J 13 depicts the quit return to D I Mux III main menu sequence Press Enter to Continue Communication Configuration C COMM mode D Display Modem Port expander conf M Change Modem Conf P Change Port Expander Conf Q Quit q m Figure I 13 Quitting...

Page 305: ...D I Mux III User s Manual Appendix I Traps and Modem Dial Out Configuration APPENDIX I TRAPS AND MODEM DIAL OUT CONFIGURATION ...

Page 306: ... Menu with Modem Dial Out Configuration commands 08 50 32 AMCU Main Menu 06 11 97 LOCAL PARAMETERS NETWORK PARAMETERS VR View Revision Levels VN View Network Parameters MT Modify Keyboard Timeout MG Modify Default Gateway MI Modify IP Address MODEM DIALOUT CONFIGURATION MS Modify Subnet Mask VD View Dial Out Parameters ML Modify SLIP Parameters MD Modify Dial Out Parameters MA Modify Alarm trap D ...

Page 307: ...e agent recognizes that one of its communication links has failed 4 linkUp Trap Signifies that the agent recognizes that one of its communication links is back in service 5 authenticationFailure Trap Signifies that the agent has the correct IP address but the community string is not recognized When an SMNP manager receives a trap message it can be displayed on a terminal screen or into a log file ...

Page 308: ...esent the T1 line will be considered down Unmarked alarms are ignored 0 Receive Far End LOF Yellow 1 Transmit Far End LOF Yellow 2 Receive AIS Blue 3 Transmit AIS Blue 4 Near End Loss Of Frame Red 5 Near End Loss Of Signal 6 Loopback 7 Bypass 8 Carrier Group Alarm 9 Delayed Carrier Group Alarm A Any Alarm N None Q Quit Chose a number to change the state of that alarm or chose a letter for the spec...

Page 309: ... any alarm marked Check is present the T1 line will be considered down Unmarked alarms are ignored 0 Receive Far End LOF Yellow 1 Transmit Far End LOF Yellow 2 Receive AIS Blue 3 Transmit AIS Blue 4 Near End Loss Of Frame Red 5 Near End Loss Of Signal 6 Loopback 7 Bypass 8 Carrier Group Alarm Check 9 Delayed Carrier Group Alarm A Any Alarm N None Q Quit Chose a number to change the state of that a...

Page 310: ...AMCU will use in determining if a link has failed and will end this session with Q The operator then chooses to keep the changes and exit with D Modify T1 Alarm Trap Conditions 1 Modify T1 line one criteria Q Quit Select Q Exit from Set Alarm Trap Criteria D Done Save changes C Cancel Discard changes R Return to set screen R D Figure J 4 Quit Modify Alarm ...

Page 311: ...DEM DIAL OUT MD Modify Dial Out Parameters If the AMCU is appropriately configured a trap can cause the AMCU to dial out on a customer supplied modem to reach an SMNP manager This command allows the user via menu selections to do the following Configure the SLIP port of the AMCU for modem or no modem Set the length of inactivity Timeout before the modem hangs up Input a Modem Initialization String...

Page 312: ... Modem present T Timeout I Modem initialization string N Dail out numbers V View dial out parameters Q Quit Select parameter to set or modify Q m Figure J 5 Select Modify Dial Out MODEM PRESENT After choosing the M option the user now selects Y for yes configure the SLIP port for a modem N says no don t configure this SLIP port for a modem Modem Connected to SLIP port Yes Y Configure for modem N c...

Page 313: ...approximately 15 20 seconds but is rounded to zero minutes Sending or receiving a SLIP packet restarts the timer Modify Dial Out Parameters M Modem present T Timeout I Modem initialization string N Dail out numbers V View dial out parameters Q Quit Select parameter to set or modify Q T Modem Inactivity Timeout 1 Min 0 Minimum 1 1 Minute 2 5 Minutes 3 10 Minutes 4 30 Minutes Q Quit Q Figure J 6 Set...

Page 314: ...t Parameters M Modem present T Timeout I Modem initialization string N Dail out numbers V View dial out parameters Q Quit Select parameter to set or modify Q i Modem Initialization String ATZV1 D2 C1E0 Do you want to enter a new string Y or N N y Please enter a new value zero to 32 characters End the entry with a carriage return Enter key ATZV1 D2 C1E0 Figure J 8 Input Modem Initialization String ...

Page 315: ...t for escape sequence or the repeat command Z means reset the modem and recall the factory configuration V1 displays the result code s in the form of words D2 assume the command state when an on to off transition of DTR occurs C1 Track the presence of a data carrier Use D2 C1 because software convention assumes that when DTR goes low the modem will hang up Using the factory default D0 C0 will not ...

Page 316: ...attention prefix followed by in this case dt meaning dial tone or dp for dial pulse For example atdt5239417 See the example on the previous page for a breakdown of the string There are many other options available for a particular modem Please consult your modem manual for further information Modify Dial Out Parameters M Modem present T Timeout I Modem initialization string N Dail out numbers V Vi...

Page 317: ...7 ADD A NUMBER After choosing the N option the user selects a from the sub menu to add a number to the dial out list Edit Dial Out Numbers A Add a number C Change a number D Delete a number Q Quit Q a Dial Out Number Command Strings 1 atdt5239417 2 3 4 5 Figure J 10 Add a Number ...

Page 318: ...mber 1 Q Quit Please enter one of B 1 or Q 1 1 Please enter a new value zero to 32 characters End the entry with a carriage return Enter key atdt5105236000 Dial Out Number Command Strings 1 atdt5239417 2 atdt5105236000 3 4 5 Figure J 11 Put Number In the List The user has added a new phone number to the list This number was added after the first number but could have been added before it depending...

Page 319: ... the next number in the list The modem will cease dialing after it has tried and not connected with all 5 numbers This scenario is extremely unlikely CHANGE A NUMBER If for any reason the dial out number needs to be changed the user can correct the error with the C command Edit Dial Out Numbers A Add a number C Change a number D Delete a number Q Quit Q c Dial Out Number Command Strings 1 atdt5239...

Page 320: ...umber he wishes to change Change a dial out number 1 Change number 1 2 Change number 2 Q Quit Please enter one of 1 through 2 or Q Q 2 Please enter a new value zero to 32 characters End the entry with a carriage return Enter key atdt15105236000 Dial Out Number Command Strings 1 atdt5239417 2 atdt15105236000 3 4 5 Figure J 13 Select Number to Change ...

Page 321: ... A NUMBER If for some reason a dial out number is no longer of any use it can be deleted by the D command Edit Dial Out Numbers A Add a number C Change a number D Delete a number Q Quit Q d Dial Out Number Command Strings 1 atdt5239417 2 atdt15105236000 3 4 5 Figure J 14 Delete a Number ...

Page 322: ...E This sub menu allows the operator chooses which number to delete Delete a dial out number 1 Delete number 1 2 Delete number 2 Q Quit Please enter one of 1 through 2 or Q Q 2 Dial Out Number Command Strings 1 atdt5239417 2 3 4 5 Figure J 15 The Number Deleted Dial Out number 2 in the list has been deleted ...

Page 323: ... Parameters M Modem present T Timeout I Modem initialization string N Dail out numbers V View dial out parameters Q Quit Select parameter to set or modify Q v 15 43 11 Dialer Parameters 06 19 97 Modem Connected to SLIP port Yes Modem Inactivity Timeout 1 Min Modem Initialization String ATZV1 D2 C1E0 Dial Out Number Command Strings 1 atdt5239417 2 3 4 5 Figure J 16 View Parameters ...

Page 324: ...ial Out Parameters M Modem present T Timeout I Modem initialization string N Dail out numbers V View dial out parameters Q Quit Select parameter to set or modify Q The default command Q is used here Exit from Set Dial Out Parameters D Done Save changes C Cancel Discard changes R Return to set screen R D Figure J 17 Quit The operator then chooses to save the changes made discard the changes or to r...

Page 325: ... the operator to view the current configuration or a new configuration after a session with the MD command VD 15 43 11 Dialer Parameters 06 19 97 Modem Connected to SLIP port Yes Modem Inactivity Timeout 1 Min Modem Initialization String ATZV1 D2 C1E0 Dial Out Number Command Strings 1 atdt5239417 2 3 4 5 Figure J 18 VD Command ...

Page 326: ...nouts for the cable that connects the AMCU with the modem The Modem end of the cable is a dB 9 connector while the AMCU end is an RJ 45 connector again this is for a Hays modem if the DB connector on your modem is different please consult your modem manual Modem end of cable AMCU end of cable Male dB 9 Male RJ 45 Figure J 19 Cable Pin Outs ...

Page 327: ...D I Mux III User s Manual Appendix I Traps and Modem Dial Out Configuration 307 Figure J 20 RJ 48 pin out ...

Page 328: ...ters and get locked out while in a telnet session Also all commands are available in the CCU screens with level 1 access WARNING If the user sets the keyboard time out via the MT command refer to your D I MUX III WITH SNMP manual for further information to No Time Out and the communication link to the AMCU is severed the user will be locked out of both Telnet and terminal mode permanently To resto...

Page 329: ...other customer services per a written service agreement providing such agreement has been executed and authorized by the customer Return Policy An item may only be returned with prior written approval of an authorized Coastcom representative Any such approval shall reference a return material authorization number issued by said Coastcom representative Shipping costs if any incurred in connection w...

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