Multitech MMV1600 Owner'S Manual Download

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2.3

Configuration 2

Configuration 2 is two MultiMux MMV1616C sixteen channel multiplexers with two external Multi-Tech 56K bps Digital

Service Units (DSUs) linking the two sites over a Digital Data Service (DDS) network. The RS232C interface on The

DSUs is connected to COMPOSITE LINK A EXTERNAL MODEM/DSU connector on the back panel of the MMV1616C.

The MMV1616Cs are set up for an external link device with a maximum link speed of 56,000 bps. Composite link A

needs to be set up for external clocking. Both external DSUs must be set for DDS clocking. Configuration 2 is shown in

Figure 2-2.

Channel 9 Channel 10

Channel 11 Channel 12

Channel 13 Channel 14 Channel 15

Channel 16

Channel 1 Channel 2

Channel 3 Channel 4

Channel 5 Channel 6 Channel 7

Channel 8

Composite Link A

Composite Link B

Command Modem

Voice/Fax Channel 1

Voice/Fax Channel 2

MultiMux 16

Data/Voice/Fax
Statistical Multiplexer

Systems

MultiTech

Local Site

MultiMux MMV1616

Asynchronous
Channel

Unix Host

PDN

Dial-Up Line

Composite Link

MT56DSU

(Node 1)

MultiMux MMV1616

Channel 9 Channel 10

Channel 11 Channel 12

Channel 13 Channel 14 Channel 15

Channel 16

Channel 1 Channel 2

Channel 3 Channel 4

Channel 5 Channel 6 Channel 7

Channel 8

Composite Link A

Composite Link B

Command Modem

Voice/Fax Channel 1

Voice/Fax Channel 2

MultiMux 16

Data/Voice/Fax
Statistical Multiplexer

Systems

MultiTech

Asynchronous
Channel

Printer

Remote Site

Printer

Terminal

Printer

Terminal

(Node 2)

Figure 2-2. Configuration 2

The channels are set up with the same considerations as in Configuration 1. The composite link configuration may be

changed using the List Composite Link Configuration (

) command which is shown in the following example.

DSU

LOOP

TYPE

SPEED CLOCKING

BACK

EXTERNAL 56000

EXTERNAL

OFF

Configuration 2 Composite Link Configuration

Summary of Contents for MMV1600

Page 1: ...MultiMux MMV1600 3200 Series Data Voice Fax Priority Statistical Multiplexer Owner sManual ...

Page 2: ...ser will be required to correct the interference at his own expense Warning Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment The CE mark is affixed to the enclosed MultiTech product to confirm compliance with the following European Community Directives Council Directive 89 336 EEC of 3 May ...

Page 3: ...Inc to notify any person or organization of such revisions or changes Record of Revisions Revision Description G Manual revised with minor editorial comments 4 15 96 H Manual revised with minor editorial comments 9 30 96 I Manual revised to include CE Mark and minor editorial 4 27 97 comments All pages at Revision I J Manual revised to include new command All pages at Revision J 8 07 97 Patents Th...

Page 4: ...mpatibility 1 20 Chapter 2 Configuration 2 1 Introduction 2 1 2 2 Configuration 1 2 2 2 3 Configuration 2 2 4 2 4 Configuration 3 2 5 2 5 Configuration 4 2 8 2 6 Configuration 5 2 11 2 7 Configuration 6 2 13 2 8 Configuration 7 2 15 2 9 Configuration 8 2 17 Chapter 3 Front and Rear Panel Descriptions 3 1 Introduction 3 1 3 2 Front Panel 3 1 3 3 Back Panel 3 5 3 3 1 ON OFF Switch 3 5 3 3 2 Power Co...

Page 5: ...nel Testing 7 16 Chapter 8 Service Warranty and Tech Support 8 1 Introduction 8 1 8 2 Limited Warranty 8 1 8 3 Tech Support 8 2 Appendices Appendix A ASCII Character Code Hex Decimal Conversion Chart A 1 Appendix B RS232C Interface Specification B 1 Appendix C Cabling Diagrams C 1 Appendix D Command Modem Commands D 1 Appendix E Command Modem S Register Functions E 1 Appendix F Flow Control Backgr...

Page 6: ... Fax Operating Procedures 6 5 6 3 Command Modem Operating Procedures 6 7 7 1 Data Troubleshooting Guide 7 4 7 2 Voice Fax Troubleshooting Guide 7 8 7 3 Channel Device Testing Procedure 7 11 7 4 DSU and Communications Line Testing Procedure 7 12 7 5 MultiMux Functional Testing Procedures 7 13 7 6 Voice Fax Channel Testing Procedures 7 15 7 7 Sync Data Channel Testing Procedure 7 16 ...

Page 7: ...series is available in several models 16 and 32 channel units with internal command modem composite link digital service units DSUs supporting synchronous communications and two optional voice fax channels The typical examples explain how the MultiMux can be used in various environments Chapter 3 Front and Back Panel Descriptions Chapter 3 describes the front panel indicators the switches and jump...

Page 8: ...des instructions on getting service for the MultiMux at the factory a statement of the limited warranty information about our user bulletin board service and space for recording information about your multiplexer prior to calling Multi Tech s Technical Support ...

Page 9: ...nd then broken up into individual components on the other end Someone wishing to tap into a muxed signal must not only have the link protocol which is typically a proprietary version of High Level Data Link Control HDLC but must also know the individual channel assignment schemes and data formats 1 3 1 Description of Statistical Multiplexing A statistical multiplexer also known as a stat mux is a ...

Page 10: ...sses serial synchronous digital data over a DDS network or other four wire unloaded twisted pair wiring system Data transmission on the composite link starts at 2400 bps doubles to 4800 9600 19 200 and finally to 56 000 bps in multipoint and point to point applications 1 4 Product Description The MultiMux MMV1600 3200 series is available in two basic models a 16 channel or 32 channel unit with int...

Page 11: ...e instrument is connected to the FXS connection The FXO connection to the PBX uses a station number on the PBX The local FXO connection accepts the ringing voltage from the PBX and the remote FXS connection outputs a ringing voltage If the application is to have a dedicated instrument at both locations then the FXS connection is used When the calling instrument goes off hook in a FXS connection th...

Page 12: ...wenty four or thirty two channel multiplexer whether the composite link devices are internal DSUs or external devices whether or not the command modem will accept remote access etc The DIP switches control the hardware setup and the operating setup is controlled through software commands The software commands are entered at a terminal connected to the COMMAND PORT which are transferred to either t...

Page 13: ... modems can be connected With dual composite links another feature is added to the MultiMux in the way of networking Networking MultiMuxes allows the stringing of several MultiMux units together via their composite links This feature allows data to be routed over the composite links using pass through channel connection to any MultiMux in the multinode network The MultiMux checks for a code that w...

Page 14: ...parameters for both the local and remote MultiMux units can be set from one location The MMV1600 3200 series can downline load parameters for the data channels but not for the voice fax channels Data channel parameters can be downline loaded to the MMV1600 MMV3200 MMH1600 MMH3200 and the MMH900 series units When power is first applied or a Reset command is executed to the local or remote MultiMux ...

Page 15: ... high medium or low setting with the low used for those channels requiring higher volume batch transfers There are also software sensing response time techniques where the microprocessor actually monitors channel activity and when a high volume is sensed that channel is given a lower priority so it will not crowd out the others The MultiMux response time control method is one where data is transfe...

Page 16: ...tility commission public service commission or corporation commission for information 9 If so required this equipment is hearing aid compatible Manufacturer Multi Tech Systems Inc Model Number MMV16XXC 56 56 V MMV32XXC 56 56 V FCC Registration Number AU7USA 18883 DE N DSU AU7USA 20328 MD E Ringer Equivalence 0 3B Command modem Modular Jack USOC RJ11C or RJ11W single line Service Center in U S A Mu...

Page 17: ... to select channel speeds flow control methods listing of parameters help screens storing of configurations downline loading status reporting echo controls resets pacing parity stop bits response time priorities test modes modem configurations and other parameters Diagnostics Memory tests Local and Remote Digital Loop tests Switch test LED test Non Volatile RAM test Watchdog Timer and Voice fax Ch...

Page 18: ...Speeds 2400 1200 and 0 300 bps Line Interface RJ11C jack for dial up line 1 8 8 Electrical Physical Voltage 115 volts AC standard 240 volts AC optional Frequency 47 to 63 Hz Power Consumption 50 watts 16 channel 57 watts 32 channel Fuse 3AG 1 Amp S B slo blo Dimensions 6 7 high x 15 1 wide x 13 deep MMV16xx 17 cm high x 38 4 cm wide x 33cm deep 10 high x 15 1 wide x 13 deep MMV32xx 25 4 cm high x ...

Page 19: ...it with internal command modem MMVXXXXC 56 Internal 56K bps composite link DSU MMVXXXXC 56 56 Two internal 56K bps composite link DSUs MMVXXXXC V Two internal voice fax channels MMVXXXXC 56 V Internal 56K bps composite link DSU and two internal voice fax channels MMVXXXXC 56 56 V Two internal 56K bps composite link DSUs and two voice fax channels Valid voice fax configurations are as follows Confi...

Page 20: ...ate with any of the async channels at the remote site The asynchronous channels of the local mux are configured with XON XOFF software flow control enabled so that the channel buffers in the local mux do not lose data from the host With flow control enabled at the local mux the local mux can tell the host when it feels that it s dynamic buffers are becoming full For the same reasoning pacing shoul...

Page 21: ...01 A 07 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 07 01 A 08 4800 8 1 NONE XON XOFF OFF OFF ON OFF OFF 08 01 A 09 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 09 01 A 10 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 10 01 A 11 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 11 01 A 12 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 12 01 A 13 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 13 01 A 14 19200 8 1...

Page 22: ... Channel 1 Voice Fax Channel 2 MultiMux 16 Data Voice Fax Statistical Multiplexer Systems MultiT ech Local Site MultiMux MMV1616 Asynchronous Channel Unix Host PDN Dial Up Line Composite Link MT56DSU2 MT56DSU2 Node 1 MultiMux MMV1616 Channel 9 Channel 10 Channel 11 Channel 12 Channel 13 Channel 14 Channel 15 Channel 16 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8...

Page 23: ...Channel 1 Voice Fax Channel 2 MultiMux 16 Data Voice Fax Statistical Multiplexer Systems MultiT ech Local Site Digital Line Asynchronous Channel MultiMux MMV1616 PDN Composite Link A Composite Link B Remote Site 1 Minicomputer PDN Terminal Asynchronous Channel Terminal Terminal Printer Terminal Terminal Terminal Terminal Printer Channel 9 Channel 10 Channel 11 Channel 12 Channel 13 Channel 14 Chan...

Page 24: ...9200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 04 03 A 13 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 05 03 A 14 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 06 03 A 15 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 07 03 A 16 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 08 03 A OK Configuration 3 Local Site Channel Parameters Local Channel Parameters Node 02 STP FLOW ENQ PASS PASS DEST DEST LINK CHN SPD W...

Page 25: ...ltiMux 16 Data Voice Fax Statistical Multiplexer Systems MultiT ech Composite Link PC Printer Modem PDN 2 3 1 4 5 6 7 9 8 Fax Telephone Terminal Terminal Terminal Local Site Remote Site Voice Fax Channel 1 FXO PBX Trunk Trunk Station Trunk Station PSTN Voice Fax Channel 2 FXS Voice Fax Channel 2 FXO Node 1 Node 2 Figure 2 4 Configuration 4 FXO to FXS The local site is configured for an FXO configu...

Page 26: ...STINATION CHANNEL 01 DESTINATION CHANNEL 02 DESTINATION NODE 01 DESTINATION NODE 01 LINK A B D A LINK A B D A DIGITIZING RATE 16000 DIGITIZING RATE 16000 OUTPUT LEVEL ATTEN 09 OUTPUT LEVEL ATTEN 09 INPUT LEVEL GAIN 06 INPUT LEVEL GAIN 06 SILENCE SUPPRESSION 00 SILENCE SUPPRESSION 00 LOCAL INTERFACE TYPE FXS LOCAL INTERFACE TYPE FXS GROUND LOOP START FXS LOOP GROUND LOOP START FXS LOOP 2 OR 4 WIRE ...

Page 27: ...posite Link PC Printer Modem PDN PSTN Voice Fax Channel 1 E M Telephone Terminal Terminal Terminal Local Site Remote Site Voice Fax Channel 1 E M PBX Trunk Trunk Station Trunk Station PSTN PBX Trunk Trunk Station Trunk Station Telephone Node 2 Node 1 Figure 2 5 Configuration 5 E M I V Both sites are configured for an E M configuration on voice fax channel 1 using the V1LIE M1W4 command and setting...

Page 28: ...EVEL GAIN 05 INPUT LEVEL GAIN 05 SILENCE SUPPRESSION 00 SILENCE SUPPRESSION 00 LOCAL INTERFACE TYPE E M 1 LOCAL INTERFACE TYPE E M 1 GROUND LOOP START FXS N A GROUND LOOP START FXS N A 2 OR 4 WIRE E M 4 WIRE 2 OR 4 WIRE E M 4 WIRE DIALTONE WINK E M WINK DIALTONE WINK E M WINK WINK TIMER E M 100 WINK TIMER E M 100 REMOTE INTERFACE TYPE E M 1 REMOTE INTERFACE TYPE E M 1 GROUND LOOP START FXS N A GRO...

Page 29: ...ta Voice Fax Statistical Multiplexer Systems MultiT ech Composite Link PC Printer Modem PDN Terminal Terminal Terminal Local Site Remote Site Voice Fax Channel 1 FXS 2 3 1 4 5 6 7 9 8 Fax Telephone Voice Fax Channel 2 FXS Voice Fax Channel 1 FXS 2 3 1 4 5 6 7 9 8 Fax Telephone Voice Fax Channel 2 FXS Node 2 Node 1 Figure 2 6 Configuration 6 FXS to FXS Both sites are configured for an FXS configura...

Page 30: ...UT LEVEL GAIN 03 INPUT LEVEL GAIN 03 SILENCE SUPPRESSION 00 SILENCE SUPPRESSION 00 LOCAL INTERFACE TYPE FXS LOCAL INTERFACE TYPE FXS GROUND LOOP START FXS LOOP GROUND LOOP START FXS LOOP 2 OR 4 WIRE E M 2 WIRE 2 OR 4 WIRE E M 2 WIRE DIALTONE WINK E M N A DIALTONE WINK E M N A WINK TIMER E M N A WINK TIMER E M N A REMOTE INTERFACE TYPE FXS REMOTE INTERFACE TYPE FXS GROUND LOOP START FXS LOOP GROUND...

Page 31: ...nnel 2 MultiMux 16 Data Voice Fax Statistical Multiplexer Systems MultiT ech Composite Link PC Printer Modem PDN 2 3 1 4 5 6 7 9 8 Fax Telephone Terminal Terminal Terminal Local Site Remote Site Voice Fax Channel 2 E M PBX Trunk Trunk Station Trunk Station PSTN Voice Fax Channel 2 FXS Voice Fax Channel 1 E M Telephone Node 1 Node 2 Figure 2 7 Configuration 7 E M I V to FXS The local site is config...

Page 32: ... LEVEL GAIN 03 INPUT LEVEL GAIN 03 SILENCE SUPPRESSION 00 SILENCE SUPPRESSION 00 LOCAL INTERFACE TYPE FXS LOCAL INTERFACE TYPE FXS GROUND LOOP START FXS LOOP GROUND LOOP START FXS LOOP 2 OR 4 WIRE E M 2 WIRE 2 OR 4 WIRE E M 2 WIRE DIALTONE WINK E M N A DIALTONE WINK E M N A WINK TIMER E M N A WINK TIMER E M N A REMOTE INTERFACE TYPE E M 2 REMOTE INTERFACE TYPE E M 2 GROUND LOOP START FXS N A GROUN...

Page 33: ...iMux 16 Data Voice Fax Statistical Multiplexer Systems MultiT ech PSTN PBX Trunk Trunk Station Trunk Station File Server Print Server LAN PC LAN PC LAN PC Printer Communications Server Ethernet Concentrator Voice Fax Channel Multiplexer Channel 9 Channel 10 Channel 11 Channel 12 Channel 13 Channel 14 Channel 15 Channel 16 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channe...

Page 34: ...Chapter 3 ...

Page 35: ...posite Link If your MultiMux has internal DSU s connect the RJ48 cable shipped with your MultiMux to the COMPOSITE LINK A or B INTERNAL DSU connector s on the back panel of the MultiMux and to your phone line Proceed to cabling either the sync data channel or the async channels Table 4 1 Cabling Procedure Step Procedure MultiTech CHANNEL 14 CHANNEL 10 CHANNEL 13 CHANNEL 9 CHANNEL 16 CHANNEL 12 CHA...

Page 36: ...ct the RJ45 connector of this cable to either VOICE FAX CHANNEL 1 E M connector on the back panel of the MultiMux or to VOICE FAX CHANNEL 2 E M connector on the MultiMux Pin assignments for this cable are described in Appendix D Connect the spade lug end of this cable to the trunk side of the PBX Refer to the PBX manual for this connection Note If the spade lugs are not needed on the PBX end they ...

Page 37: ...quire a slight forward tug on the voice fax board if installed to free it from its board edge connector while pulling the other boards forward 6 Disconnect the control ribbon cable from the Aggregate board 7 Disconnect the data and address ribbon cable connector from the Aggregate board 8 If the Voice Fax board is in the chassis remove the ribbon cable between the Aggregate board and the Voice Fax...

Page 38: ...ted into the back panel 17 Ensure that the pc board chassis locks will seat into the boards Then loosen pry down and retighten the screws Warning Ensure that the power cable connector pins align with the connector on the power supply board and that the power cable connector has the locking notch facing upward If the cable is misaligned in any way severe damage may occur to the unit 18 Connect the ...

Page 39: ...or the remote DSU is not configured for the composite link Proceed to configuring the composite link Table 4 3 Configuration Procedure Step Procedure 8 Enter the List Composite Link Configuration command L to display the default configuration of Composite Link A and B The display may appear as follows CONFIGURATION OF PORT A COMPOSITE LINK DSU TYPE SPEED CLOCKING LOOPBACK EXTERNAL 128K INTERNAL OF...

Page 40: ...0 8 1 NONE CTS OFF OFF OFF OFF OFF 15 01 A 16 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 16 01 A 15 Based on the listed conditions for each channel reconfigure the parameters to match your actual channel requirements by entering commands as described in Chapter 5 As you change operational parameters they will not actually be incorporated into your running system until you execute a Store New Parameter...

Page 41: ...econfigure the parameters to match your actual Voice Fax channel requirements by entering commands as described in Chapter 5 As you change parmeters they will not actually be incorporated into your running system until you execute a Store New Parameters W command ...

Page 42: ... described in this chapter The general AT commands for the command modem are described in Appendix D The following functional grouping of the commands are listed with their paragraph title and paragraph number General Commands 5 2 1 Channel Parameter Commands 5 2 2 Composite Link Speed Clocking commands 5 2 3 Additional Composite Link Commands 5 2 4 Voice Fax Channel Commands 5 2 5 Test Commands 5...

Page 43: ...the Clocking if Supplied by the Multiplexer Port B MUXBSYNC Selects Port B as Sync Data Channel MUXBCOMP Selects Port B as Composite Link Additional C Clear Composite Statistics Composite F Load Factory Defaults for DSU and ISCC Link FT Flush Timer Value L List Configuration of Port A and Port B L List Composite Link Settings RB Set Auto reporting Baud Rate RT Set Auto Reporting Time Interval RXT ...

Page 44: ...les W Wait for Dial Tone Wn Store Active Profile X Result Code Set Call Progress Yn Select Stored Profile on Power Up Z Recall Stored Profile 5 1 Command Summary Cont TYPE COMMAND DESCRIPTION Command Zn x Store Telephone Numbers Modem 0 to 9 A to D Dial Digits Characters Cont Wait for Quiet Answer Flash Hook Automatic Pauses in Dialing Return to Command Mode after Dial Command Execution Escape Seq...

Page 45: ... Type ATH2 to view the DIP switch configuration D Type ATH3 for composite link speed and clocking commands E Type ATH4 for additional composite link commands F Type ATH5 for miscellaneous commands G Type ATH6 for voice fax channel commands H Type ATH7 for additional voice fax channel commands The H1 menu is as follows CHANNEL PARAMETER COMMANDS B BAUD RATE SELECTION P PARITY SELECTION C CHANNEL SE...

Page 46: ...STATISTICS SL STATUS OF FRONT PANEL LEDS FOR HELP ON A SPECIFIC COMMAND ENTER ATH FOLLOWED BY A COMMAND LETTER The H5 menu is as follows MISCELLANEOUS COMMANDS I ID CODE MA MODEM ACCESS FOR COMMAND MODEM RA REMOTE ACCESS FOR COMMAND MODEM T TEST MODES W SAVE PARAMETERS WRITE TO MEMORY Z RESET MULTIMUX FOR HELP ON A SPECIFIC COMMAND ENTER ATH FOLLOWED BY A COMMAND LETTER The H6 menu is as follows V...

Page 47: ... Destination The DN command specifies destination node of the channels to Node Number which the local source channels will connect On multinode networks this command must be entered at both channel DNxx locations specifying each other as destinations channels can pass through six nodes to get to its destination On point to point networks this parameter can be down line loaded For example if some n...

Page 48: ... to individual users the Pass EIA Signals command will allow terminals to operate as if they were connected directly to a communications line and not through a multiplexer This is done by allowing selected pins signals on one mux to be passed through to selected pins signals on a second remote mux The following diagram shows how the Pass EIA Signals command routes the selected signals Composite Li...

Page 49: ...F 01 02 A 02 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 02 02 A 03 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 03 02 A 04 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 04 02 A 05 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 05 02 A 06 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 06 02 A 07 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 07 02 A 08 19200 8 1 NONE CTS OFF OFF OFF OFF OFF 08 02 A 09 19200 8 1 NONE CTS OFF OFF OFF OFF OF...

Page 50: ...s to be unique to any other node in your network Remember that the node number selected will be used by other nodes using a DNxxx command when accessing the node For example if you assign 124 as the SN of a local node SN124 command accessing that node from another node requires 124 in other nodes Destination Node number command DN124 Remote Source This command selects the Source Node Number for gr...

Page 51: ...internal DSU on link A to establish the timing DDS Clocking command DSUCLD is used whenever the internal DSU is connected to DDS network line The DSUCLD command is the factory default and automatically configuresthe MultiMux clocking DSU Speed The DSU Speed command sets the speed of the internal DSU The DSUASP56000 command sets the internal DSU on link A DSUSP to a link speed of 56K bps The defaul...

Page 52: ...e Composite statistics record without resetting the entire MultiMux unit The Statistics CA command clears link A composite statistics and CB clears link B statistics C Load DSU The Load DSU Factory Defaults command returns the status of Factory Defaults the internal DSU to its original default status as shipped from thefactory Thedefault conditions are as follows F Speed 56K Clock DDS Flush Timer ...

Page 53: ... console display The intervals are in hour RT0 99 increments from 1 to 99 hours with RT0 being the off condition Programmable The Programmable Retransmit Timer RXT command allows Retransmit Timer t h e user to set a maximum time limit on when an acknowledgement needs to be received from the remote MultiMux before the data RXT block is retransmitted The timer can be set for link A RTXA4 and link B ...

Page 54: ... LOOP GROUND LOOP START FXS LOOP 2 OR 4 WIRE E M 2 WIRE 2 OR 4 WIRE E M 2 WIRE DIALTONE WINK E M N A DIALTONE WINK E M N A WINK TIMER N A WINK TIMER N A REMOTE INTERFACE TYPE FXS REMOTE INTERFACE TYPE FXS GROUND LOOP START FXS LOOP GROUND LOOP START FXS LOOP 2 OR 4 WIRE E M 2 WIRE 2 OR 4 WIRE E M 2 WIRE DIALTONE WINK E M N A DIALTONE WINK E M N A Reset The Reset Voice Fax Channel command sets the ...

Page 55: ...nput level on the local mux is adjusted the volume level heard on the remote mux will change accordingly The input level gain needs to be set on the transmitting mux talking This will increase the volume that the person at the receiving mux hears To increase the input level gain at the receiving mux will have no affect on what this person hears MUX MUX PDN IL Talk Increase 2db Hear 2db Louder IL T...

Page 56: ... Channel The Voice Fax Channel Silence Suppression command keeps Silence Suppression moments of silence from using up bandwidth on the composite link Typically a voice conversation is 50 to 60 silence Silence V 1 2 SS suppression is helpful when using a slow composite link speed such as 19 200 bps The higher the command level e g V1SS2 the greater the silence suppression The range of the command i...

Page 57: ...e default V 1 2 WT delay is 250 msec 5 2 6 Test Commands Memory There are two memory tests available on the MultiMux The first Test test T1 will alter the contents of the basic system memory which is automatically restored when power is turned on to the T1 2 system or when a reset command is executed The second memory test T2 alters the contents of the memory that stores parameters When this test ...

Page 58: ...is installed When this test is initiated voice fax channel T12 1 will communicate with voice fax channel 2 and vice versa on thesameMultiMuxunit You will need to configure the local and remote interface types FXS FXO E M that you wish to test on each voice fax channel Test Mode 13 Test Mode 13 is the local loop test that receives data from a synchronous device and loops that data back to the sync ...

Page 59: ... 01 A 08 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 08 01 A 09 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 09 01 A 10 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 10 01 A 11 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 11 01 A 12 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 12 01 A 13 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 13 01 A 14 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 14 01 A 15 19200 ...

Page 60: ... 05 00 A 06 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 06 00 A 07 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 07 00 A 08 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 08 00 A 09 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 09 00 A 10 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 10 00 A 11 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 11 00 A 12 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 12 00 A 13 192...

Page 61: ...n Chapter 5 of this manual 6 3 Voice Fax Operating Procedures The Voice Fax Operating Procedures begin with displaying the Voice Fax Channel parameters and then executing the commands to change the default parameters to fit your specific voice or fax needs The Voice Fax Channel parameters are displayed for both channels and contain general parameters for each channel such as destination channel nu...

Page 62: ...et your supervisory console to 2400 bps or less to communicate with the command modem Execute the Command Modem Select command by entering the following AT MA1 hit Return The following will be displayed on your supervisory console when connected and in command mode COMMAND MODEM ACCESS ON You may now enter the commands for the command modem as described in Appendix F 2You can have the Result Codes...

Page 63: ...OFF 03 02 A 04 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 04 02 A 05 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 05 02 A 06 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 06 02 A 07 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 07 02 A 08 19200 8 1 NONE XON XOFF OFF OFF OFF OFF OFF 08 02 A OK To end your call to the remote site you can either terminate the whole command modem operation and put your su...

Page 64: ...If the test runs correctly you then can check the composite statistics for additional information The data in the composite statatistics report will tell you more about line failure conditions The following items are on your composite status report COMPOSITE STATISTICS ELAPSED TIME 00 DAYS 00HRS 00 MIN DATA BLOCKS TRANSMITTED 0 DATA BLOCKS RETRANSMITS 0 DATA BLOCKS RECEIVED 0 RECEIVE BLOCK ERRORS ...

Page 65: ... must be off for loopback testing Figure 7 1 Off Line Test Modes 7 4 TroubleshootingGuide The following guides are set up as a series of possible conditions causes and suggested fixes or steps in finding the failing unit Because of the different manufacturer s equipment involved in typical multiplexer networks you may encounter finger pointing as to who is at fault Who is at fault is not as import...

Page 66: ...ection 2 If external DSU or modem is installed check RS232C V 35 cable between devices for loose connection or bent pin 2 Not receiving data from 1 Verify that both muxes are powered remote mux ON 2 Verify that both muxes are connected to communications line Table 7 1 Data Troubleshooting Guide Continued Condition Possible Cause Corrective Action Composite link down 2 Not receiving data from 3 If ...

Page 67: ...nd RCV LEDs ON and 2 Change channel parameters to match RD OFF channel devices Refer to Chapter 5 for Channel Paramater Commands 3 Perform channel device testing refer to Channel Device Testing in this Chapter 4 Call Tech Support for assistance refer to Chapter 8 2 Channel devices 1 Refer to cabling diagrams of both mux incorrectly cabled and channel devices 2 Call Tech Support for assistance refe...

Page 68: ...to FXO 1 Device not connected to 1 Verify that the device is attached to configuration Local correct voice fax channel the correct voice fax channel telephone does not ring RJ 11 connector 2 Voice fax channel 1 Verify that the voice fax channels configuration problem are configured correctly destination node and channel and composite link 2 Verify that local voice fax interface type is configured ...

Page 69: ...annel 2 Wrong type of telephone 1 Ensure that the telephone cord cannot communicate cord connected to the voice fax channel is with the remote site an RJ11 for the FXO and or FXS Continued connector s or E M cable for the E M 1 5 connection No voice fax 1 Frame ground not 1 Attach PBX ground to MultiMux frame communication connected to PBX ground screw E M to E M 2 Voice fax configuration 1 Verify...

Page 70: ...wing command If using your external link device this test does not apply AT T4 hit Return Note The MultiMux must have downline loading turned off when doing channel device testing The supervisory console will display the following message LOCAL LOOP TEST 4 2 Enter data on the keyboard of each channel device and if the local portion of your network is operating correctly the data will be correctly ...

Page 71: ...et the source and destination nodes on the local MultiMux to the same node number 2 Place the remote MultiMux unit in Test Mode 5 Digital Loopback test by entering the following command AT 5 hit Return The supervisory console will display the following message REMOTE DIGITAL LOOP TEST 5 3 Enter data on the keyboard of each channel device on the local MultiMux and if the network is operating correc...

Page 72: ...e will display the following message Memory test This test will destroy all stored configurations Do you wish to continue Y N 3 Press the Y key the message writing will appear while the test is running and the following message will be displayed on the supervisory console Turn power off for 10 seconds and then back on Then enter AT to end test 4 As the message indicates turn power off for ten seco...

Page 73: ...emote interface type on channel 2 Do the same thing for the local and remote interfaces on channel 2 When this test is initiated voice fax channel 1 communicates with voice fax channel 2 and vice versa on the same MultiMux unit 2 Place the local MultiMux unit in Test Mode 12 i e executing the voice fax Loopback test by entering the following command AT T12 hit Return The supervisory console will d...

Page 74: ...1 Before the Sync Data Channel Loopback test is run port B of the MultiMux has to be set for the sync data mode using the MUXBSYNC command 2 Place the local MultiMux unit in Test Mode 13 i e executing the Sync Data Channel Loopback test by entering the following command AT T13 hit Return The supervisory console will display the following message AT THIS POINT IN TIME ANY SYNC DATA RX D BY THE MUX ...

Page 75: ...anty shall be limited at MTS s option to repair or replacement of any products which prove to be defective within the warranty period or at MTS s option issuance of a refund of the purchase price Defective products must be returned by Customer to MTS s factory transportation prepaid MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PRICE FOR ...

Page 76: ...al shipment methods are via Federal Express UPS or DHL courier services or by airmail parcel post shipments made by any other method will be refused A Returned Materials Authorization RMA is required for products shipped from outside the U S A and Canada Please contact us for return authorization and shipping instructions on any International shipments to the U S A Please include inside the shippi...

Page 77: ...4 S DC3 13 19 3 33 51 S 53 83 s 73 115 T DC4 14 20 4 34 52 T 54 84 t 74 116 U NAK 15 21 5 35 53 U 55 85 u 75 117 V SYN 16 22 6 36 54 V 56 86 v 76 118 W ETB 17 23 7 37 55 W 57 87 w 77 119 X CAN 18 24 8 38 56 X 58 88 x 78 120 Y EM 19 25 9 39 57 Y 59 89 y 79 121 Z SUB 1A 26 3A 58 Z 5A 90 z 7A 122 ESC 1B 27 3B 59 5B 91 7B 123 FS 1C 28 3C 60 5C 92 7C 124 GS 1D 29 3D 61 5D 93 7D 125 RS 1E 30 3E 62 5E 94...

Page 78: ...s of 4 7K For more specific details consult the EIA RS232C standard itself The following chart lists the EIA RS232C interface pins and circuits present on the mux RS232C interface connector All other pins are unused The composite side of the mux is configured as a DTE device and the channel sides are DCE devices PIN MULTI TECH EIA CCITT SIGNAL CIRCUIT ASSIGNMENT DESIGNATION CIRCUIT CIRCUIT SOURCE ...

Page 79: ... PIN NO 1 2 3 4 5 6 7 8 20 22 25 1 2 3 4 5 6 7 8 20 22 25 To MultiMux Channel Connector To DCE Device Communication Device i e Modem CHASSIS GROUND AA TRANSMIT DATA BA RECEIVE DATA BB REQUEST TO SEND CA CLEAR TO SEND CB DATA SET READY CC SIGNAL GROUND AB CARRIER DETECT CF DATA TERMINAL READY CD RING INDICATOR CE OUT OF SERVICE BUSY PIN NO DTE to Channel cabling PIN NO 1 2 3 4 5 6 7 8 20 22 25 1 2 ...

Page 80: ...IT DATA BA RECEIVE DATA BB DATA SET READY CC SIGNAL GROUND AB DATA TERMINAL READY CD PIN NO DCE to DTE cabling PIN NO 1 2 3 4 5 6 7 8 20 22 25 1 2 3 4 5 6 7 8 20 22 25 To MultiMux Command Port Connector To DTE Device Terminal Device i e ASCII Terminal CHASSIS GROUND AA TRANSMIT DATA BA RECEIVE DATA BB CLEAR TO SEND CB DATA SET READY CC SIGNAL GROUND AB CARRIER DETECT CF DATA TERMINAL READY CD PIN ...

Page 81: ...TA TERMINAL READY TRANSMIT DATA A RECEIVE DATA A TRANSMIT DATA B RECEIVE DATA B EXTERNAL TX CLOCK A RECEIVE CLOCK A EXTERNAL TX CLOCK B RECEIVE CLOCK B TRANSMIT CLOCK A TRANSMIT CLOCK B Composite Link Cabling RS232C V 24 Configured Composite Link V 35 Adapter Cable Configured on a RS232C V 35 Composite Link The MultiMux RS232C interface circuits have been designed to meet the electrical specificai...

Page 82: ...nd CB Request To Send CA Signal Ground AB Data Terminal Ready CD Internal Clock Data Set Ready Carroer Detect Transmit Clock Receive Clcok DCE DTE Back to Back Mux Cable 1 2 3 4 5 6 7 8 RT RR RT RR Receive Transmit RJ48 Cabling for Internal DSU This cable is used to connect two muxes back to back The cable is asymmetrical and allows one of the mux s to provide clock to the TxC and RxC pins of the ...

Page 83: ...ock spade lugs may be cut off RJ45 Spade Lug Wire Color Function 1 M Green White Input 2 E White Green Output 3 T1 White Orange 4 Wire Output 4 R White Blue 4 Wire Input 2 Wire 5 T Blue White 4 Wire Input 2 Wire 6 R1 Orange White 4 Wire Output 7 SG Brown White Signal Ground Output 8 SB White Brown Signal Battery Output Voice Fax Channel Connectors E M VOICE FAX CHANNEL FXO FXS 12345678 2345 2345 P...

Page 84: ...tory default Dial D The letter D in a command will cause the command modem to dial the telephone number immediately following it For example if you enter ATD5551212 and hit Return the command modem will dial the number 555 1212 Valid dial characters are 0 through 9 A through D and Dial modifiers are P R S x T W and In pulse dialing non digit characters have no meaning The Dial command can also be ...

Page 85: ...Tone dialing is that used P by push button Touch Tone telephones and is sometimes referred to as DTMF or Dual Tone Multi Frequency dialing T This is controlled by including a P for Pulse or a T for Tone in the dialing command right before the digits you wish to have dialed in that manner For example you would pulse dial the number 555 1212 by entering ATDP5551212 and hitting Return You could tone ...

Page 86: ...TS8 5 to assign 5 as the value for the S Register S8 meaning that the modem will pause five seconds for the comma in the dialing command instead of the normal two Or if you wish to configure the command modem to answer incoming calls after the 30th ring instead of after the first ring enter ATS0 30 and hit Return to assign the value 30 to S Register S0 Once an S Register is selected it remains sel...

Page 87: ...n Vn Xn Gn Pn and Yn S Registers S0 S14 S18 S21 S22 S23 S25 S26 S27 and S28 The W0 command stores the active profile in the NONVRAM at location zero and W1 stores the active profile in location one W0 is the factory default setting Result Code Set The Result Code Set Call Progress X command selects which Call Progress set of responses and dialing functions are active in Command mode You can choose...

Page 88: ... Z command causes the com Number mand modem to store up to four strings of telephone numbers into NVRAM for later recall by the Dial Stored Number ATDSx Z0 3 x command The format for this command is Z and up to a 36 character telephone number and or dialing modifiers which are stored at location 0 If the command format is Z is a delimiter with no number preceding the delimiter this telephone numbe...

Page 89: ...one dial the number and do nothing afterwards except go back into Command mode This can be useful in dialing applications where command modem data transfer is not desired such as voice communications Escape It is possible to cause the command modem to enter the com Sequences mand mode after the command modem has gone on line Entering without disconnecting the call This is accomplished by entering ...

Page 90: ... Continued Indicator Description Composite Link A B CD The Carrier Detect CD indicator lights when the composite link detects a carrier signal from the remote MultiMux The CD indicator lights when a carrier signal is detected for an internal DSU and when an external device DSU or composite link modem is connected to the composite link and is detecting a valid carrier RCV The Receive RCV indicator ...

Page 91: ...XS operation FXOThe Foreign Exchange Office FXO indicator lights when the designated channel is configured for FXO operation E MThe Ear and Mouth E M indicator lights when the designated channel is configured for E M operation VCEThe voice VCE indicator lights when voice traffic is active on the designated channel FAXThe FAX indicator lights when fax traffic is active on the designated channel XMT...

Page 92: ...nal DSU on link A to the DDS or dedicated network This connector provides an RJ48 connection COMPOSITE LINK A EXTERNAL MODEM DSU Connector The composite link A external modem DSU connector is used when either a compatible external composite link modem or external DSU is connected to the MultiMux This connection can be either RS232C or V 35 If the connection is V 35 then the composite link A shunt ...

Page 93: ...ed in the MultiMux The E M connector is an RJ48S 8 position keyed jack VOICE FAX CHANNEL 1 FXS Connector The voice fax channel 1 FXS Foreign Exchange Station connector is used to connect channel 1 of the MultiMux to a station instrument telephone KTS key telephone system or fax machine This connector is used when the voice fax feature is included in the MultiMux The FXS connector is an RJ11 jack V...

Page 94: ...osed position If the MultiMux has 16 channels then two channel boards are installed in the chassis and the channel board in the fourth slot from the bottom of the chassis has switch position SW 1 in the open position and SW 2 in the closed position The function of the switch is as follows Channel 1 8 9 16 17 24 25 32 Switch Position 1 C O C O Switch Position 2 C C O O C Closed O Open RS232C V 35 S...

Page 95: ...D FLOW CONTROL Flow control stops the input of data to the mux Pacing stops the output of data from the mux Flow control can be software or hardware based In software flow control special characters Xon and Xoff are used to stop and start the flow of data In hardware flow control the Clear To Send CTS signal on the RS232C interface pin 5 is brought low to stop data and high to restart it When you ...

Page 96: ...Control on Data A Data volume from the mini for any particular channel is appropriate for the mux to process and transfer on to the link B Data overwhelms a channel s mux buffer and the mux sends a stop data Flow Control OFF signal to the mini stopping data output C The mux buffer sufficiently enpties to allow additional data transfer so the mux sends a start data Flow Control ON signal to the min...

Page 97: ... is appropriate for the printer to process and print it B The printer cannot handle any more data due to its buffers being full and it issues a Pace OFF signal to the mux C The remote mux sends a Flow Control OFF signal to the other mux and uses its buffer to store any pending print data D The host mux sends a Flow Control OFF signal to the mini and uses its buffer to store any pending print data ...

Page 98: ...d in many computers and terminals The code is used to represent numbers letters punctuation and control characters The basic ASCII code is a 7 bit character set which defines 128 possible characters The extended ASCII file provides 255 characters Asynchronous Transmission The transmission of data in which each character is a self contained unit with its own start and stop bits This is a common met...

Page 99: ...DIC Checksum A control field found in synchronous data packets which contain the results of the error control algorithm used Chip Also called integrated circuits IC they are squares or rectangles that contain from a few dozen to a few million electronic components Circuit Any closed path through which electrical current can flow Circuit switched Network A technology used by the PSTN that allocates...

Page 100: ...d and receive on the same frequency carrier EIA Electronics Industries Association A membership organization founded in 1924 that includes manufacturers of electronic parts and systems With over 1200 members it sponsors shows and seminars and gives awards for outstanding contributions in electronics It sets electronic interface standards such as RS 232 Environment A computer configuration that inc...

Page 101: ...ed With software an interface is a module created to be written to That is if two programs are written to the same interface then they can be successfully linked together IRQ Level Interrupt Request Level The notification a processor receives when another portion of the computer s hardware requires its attention IRQs are numbered so that the device issuing the IRQ can be identified and so IRQs can...

Page 102: ...ommand s is the speed switch and 9600 where s 1200 115 200 bps Parity bit An extra bit attached to each byte of synchronous data used to detect errors in transmission PCB Printed Circuit Board A flat board that holds chips and other electronic components The board is printed with electrically conductive pathways between components The main PCB in a system is called a motherboard and the smaller PC...

Page 103: ...l parallel and external serial formats Switched Line In communications a physical channel established by dynamically connecting one or more discreet segments This connection lasts for the duration of the call after which each segment may be used as part of a different channel Contrast with leased line Switched Network A network in which a temporary connection is established from one point via one ...

Page 104: ...U CSUs and other high speed devices W WATS Wide Area Telephone Service pronounced watts A discounted long distance calling plan that allows calls in or out The popular 800 numbers are WATS lines in The calls are charged to the holder of the 800 number at a discounted rate Workstation Traditionally a workstation has been a dumb terminal connected to a host With the advent of LANs and WANs PCs that ...

Page 105: ...13 Automatic Fax 1 18 B Back Pane l1 2 Bulletin Board Service BBS 8 3 Bxxxxx Command 5 9 C Cabling Diagrams D 1 Carrier Detect CD indicator 3 2 3 3 CCITT V 24 1 17 CHANNEL 1 1 8 CHANNEL 8 1 8 Channel Board 4 4 Channel Board Four Position DIP Switch 3 10 Channel Devices 1 5 Channel Device Testing 7 11 Channel Device Testing Procedure 7 11 Channel Flexibility 1 11 Channel Off Command 5 9 Channel Sel...

Page 106: ...Composite Link Statistics 7 1 CompuServe 8 4 Configuration 1 2 2 Configuration 2 2 4 Configuration 3 2 5 Configuration 4 2 8 Configuration 5 2 11 Configuration 6 2 13 Configuration 7 2 15 Control Ribbon Cable 4 2 D Data and Address Ribbon Cable 4 2 Data Communications 1 3 Data Format 1 17 1 18 Data Troubleshooting Guide 7 4 DB25 Female Connector 3 6 DDS 1 8 Dedicated Network 1 8 Destination Channe...

Page 107: ... Control Command F0 F2 5 10 Flow Control Received FCR Indicator 3 2 3 3 Flush Timer Value FT 5 17 Foreign Exchange Office 1 6 Foreign Exchange Office FXO Indicator 3 3 Foreign Exchange Station 1 6 Foreign Exchange Station FXS Indicator 3 3 Four Position DIP Switch 3 10 Frequency 1 19 Front Panel 3 1 Front Panel LED Status Command SL 5 19 FXO 1 6 1 8 FXS 1 6 1 8 FXS Ground Start 2 1 FXS Loop Start ...

Page 108: ...r 1 4 Memory Test 2 T2 5 25 Memory Tests T1 T3 5 25 MLA B D 5 12 MLD Command 1 11 Model No 1 15 8 2 Modem Link Command MLA B D 5 12 Multi Tech BBS 8 3 MultiMux 1 1 MultiMux Functional Testing 7 13 MultiMux Functional Testing Procedure 7 13 MultiMux Operating Procedures 6 1 Multiplexing 1 1 Multipoint 1 5 Mux Clock Command MUXCL 5 16 Mux Speed Command MUXSP 5 16 MV2 Voice Fax board 2 8 2 15 N Netwo...

Page 109: ... fox Message Test T11 5 26 R Receive RCV Indicator 3 2 3 4 Recording MultiMux Information 8 2 Remote Access 1 17 Remote Command Modem Access Command RA1 5 27 Remote Down RD indicator 3 3 Remote Source Number Group Select SNGA H 5 14 REN 1 15 Reset Command 5 5 Reset Voice Fax Channel Command V 1 2 Z 5 20 Response Time 1 14 Response Time Control 1 14 Response Time Priority Command R0 R3 5 13 Retrans...

Page 110: ...s T1 T12 5 25 Test Mode TM Indicator 3 4 Transmit XMT Indicator 3 2 3 4 Troubleshooting 7 3 U Universal Channel Parameters C0 5 9 V V 22bis V 22 1 19 V 24 Position 4 3 V 24 Shunt 3 11 V 24 V 35 Shunt 4 3 V 35 1 8 V 35 Interface 3 11 V 35 Interface Adapter Cable 4 4 V 35 Position 4 3 V1LIFXO Command 2 8 V1RIFXS Command 2 8 V2LIFXO Command 2 8 V2RIFXS Command 2 8 Voice VCE Indicator 3 4 Voice Channe...

Page 111: ...Local Interface Command V 1 2 LI 5 24 Voice Fax Loopback Test T12 5 26 Voice Fax Input Level Gain Command V 1 2 IL 5 21 Voice Fax Operating Procedures 6 5 Voice Fax Output Level Attent Command V 1 2 OL 5 22 Voice Fax Remote Channel Interface Command V 1 2 RI 5 24 Voice Fax Troubleshooting Guide 7 8 Voice Fax Silence Suppression Command V 1 2 SS 5 23 Voltage 1 19 W Warranty 1 2 Watch Dog Timer Test...

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