Paradyne HotWire 8600 Installation Manual Download

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97-15449

Pin 1

Pin 8

97-15449

Pin 1

Pin 8

Pinouts

B-2

8600-A2-GN20-20

October 1997

8-Pin Modular LAN/WAN Slot Connector Pinouts

The 8-pin interface for the LAN/WAN 10BaseT connections (Slots 1, 2, or 3) has
the following pin assignments:

Pin Number

Use

TX Data +

TX Data –

RX Data +

Reserved

RX Data –

Reserved

8-Pin Modular Management In and Out Connector
Pinouts

The 8-pin interface for the Management In and Out connections has the following
pin assignments:

Pin Number

Use

Mgt. Data +

Mgt Data –

Fan Alarm

Ground

Power Alarm A

Power Alarm B

Mgt. Clk +

Mgt. Clk –

Summary of Contents for HotWire 8600

Page 1: ...HOTWIRE 8600 DIGITAL SUBSCRIBER LINE ACCESS MULTIPLEXER DSLAM INSTALLATION GUIDE Document No 8600 A2 GN20 20 October 1997 ...

Page 2: ...erves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual Warranty Sales and Service Information Contact your sales or service rep...

Page 3: ...or the installation site are the responsibility of the customer 7 When installed in the final configuration the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 8 A rare phenomenon can create a voltage potential be...

Page 4: ...operational and safety requirements as prescribed in the appropriate Terminal Equipment Technical Requirements document s The Department does not guarantee the equipment will 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 usi...

Page 5: ...in certain voltage limits as amended by Directive 93 68EEC Directive 89 336 EEC Council Directive of 3 May 1989 on the approximation of the laws of the member states relating to Electro Magnetic Compatibility EMC as amended by Directive 93 68 EEC Japan Class 1 ITE This is a Class 1 product based on the standard of the Voluntary Control Council for interference by Information Technology Equipment V...

Page 6: ...Installation Tasks 2 4 HotWire 8600 DSLAM Chassis Installation 2 5 Stacking the 8600 Chassis 2 5 National Equipment Building Standards NEBS 2 7 Connection to the CO Ground Lug 2 7 ESD Wrist Strip Jack 2 7 Interconnecting 8600 Systems 2 8 Installing the 8600 Chassis in a Rack with Threaded Screw Holes 2 10 Installing the 8600 Chassis in a Rack without Threaded Screw Holes 2 12 Supplying Power 2 13 ...

Page 7: ...k on the MCC for Remote Configuration 3 1 4 Troubleshooting Power Failure Troubleshooting Procedures 4 1 Power LED is OFF 4 1 Fan Alarm LED is ON 4 2 SYSTEM ALM LED is ON on a DSL Card 4 2 DSL Card is Not Working Properly 4 2 A LEDs Overview A 1 HotWire 8600 DSLAM Chassis A 1 MCC Card A 2 B Pinouts 8 Pin Modular Ethernet Connector for MCC Management Connector Pinouts B 1 8 Pin Modular LAN WAN Slot...

Page 8: ...he DSL cards to the Ethernet hubs and switches Make cable connection to a console computer or modem It is written for administrators and technicians who install devices at the Central Office CO or at an Internet Service Provider ISP location adjacent to the CO A HotWire 8600 DSLAM system requires an MCC card and at least one DSL card Multiple 8600 DSLAMs can share management connectivity through a...

Page 9: ...Chapter 3 Initial Setup Instructions Describes how to configure the MCC card for remote configuration Chapter 4 Troubleshooting Describes problems that may occur and how to troubleshoot them Appendix A LEDs Describes the meaning of the LEDs on the chassis and on the MCC and DSL cards Appendix B Pinouts Provides the pin assignments for the connectors on the Interface Panel Appendix C Technical Spec...

Page 10: ...er Premises Installation Instructions 8000 A2 GB20 HotWire DSLAM for 8540 and 8546 DSL Cards User s Guide 8000 A2 GB21 HotWire DSLAM for 8540 and 8546 DSL Cards Network Configuration Guide 8000 A2 GB24 HotWire DSLAM Configuration for 8540 and 8546 DSL Cards Startup Guide 8000 A2 GB90 HotWire 8100 8200 Internetworking Packet Concentrator IPC User s Guide 8000 A2 GN11 HotWire Management Communicatio...

Page 11: ...Line technology DSLAM provides simultaneous high speed data access digital and POTS service analog over the same twisted pair telephone line Support of this simultaneous access requires the installation of POTS splitter equipment at both ends of the line i e at the Central Office and at the customer premises The HotWire 8600 DSLAM can be configured to operate with multiple types of endpoints insta...

Page 12: ... or through a POTS splitter to an MDF but not both Legend DSL Digital Subscriber Line RTU Remote Termination Unit MDF Main Distribution Frame POTS Plain Old Telephone Service IPC Interworking Packet Concentrator Optional DSL CARD DSLAM Central Office CO 97 15674 01 Customer Premises CP CO Switch Ethernet RTU CP POTS Splitter CO POTS Splitter MDF POTS DSL HotWire 8200 IPC Voice Interface Data Inter...

Page 13: ...nagement connectivity for up to five other 8600 DSLAMs these other systems can use the first slot for a DSL card thus housing up to three DSL cards One Management Communications Controller MCC card The HotWire 8600 DSLAM requires one MCC card mounted in Slot 1 of the base or first chassis in a stack The MCC card is a processor card that administers and provides diagnostic connectivity to DSL cards...

Page 14: ...stems In a stacked configuration the first or base chassis is equipped with an MCC card in Slot 1 leaving Slots 2 and 3 available for up to two DSL cards or a maximum of eight DSL ports Each additional system will accept up to three DSL cards for a maximum of 12 additional DSL ports A HotWire 8600 DSLAM chassis can be added or removed from the stack without disrupting service to the other items in...

Page 15: ... Y S T E M O K A lrm Te st TX R X C ol 1 2 3 4 E T H E R N E T D S L P O R T RADSL 8546 S Y S T E M O K A lrm Te st TX R X C ol 1 2 3 4 E T H E R N E T D S L P O R T RADSL 8546 1 2 3 S Y S T E M O K A lrm Te st TX R X C ol E T H E R N E T S Y S T E M O K A lrm Te st TX R X C ol 1 2 3 4 E T H E R N E T D S L P O R T RADSL 8546 S Y S T E M O K A lrm Te st TX R X C ol 1 2 3 4 E T H E R N E T D S L P ...

Page 16: ...laced on a desk or table and stacked on top of each other For stability do not set more than three HotWire 8600 chassis on top of each other in a single stack on a desk or table top Two physical stacks of three chassis can be interconnected to provide shared management access for six HotWire 8600 chassis 97 15355 ...

Page 17: ...can be physically stacked on top of each other This chapter provides instructions for Mounting the DSLAM chassis in a rack Stacking the DSLAM chassis on a desktop or table Installing the MCC card Installing the DSL card s Making cable connection to the POTS splitter shelf Connecting the DSL cards to the Ethernet hubs or switches Making connection to a console terminal laptop computer or modem NOTE...

Page 18: ...nting brackets for 19 and 23 inch rack mounting One control bus cable 2 1 2 feet in length for connecting multiple 8600 systems Four 10 32 mounting screws and 12 24 speed nuts for use with racks without threaded mounting holes three captive screws and three cable ties NOTE The HotWire 8600 DSLAM chassis requires an MCC card and at least one DSL card for proper functionality These cards are not pro...

Page 19: ...Grounding A ground lug is located at the center of the cover at the rear It accepts 14 AWG wire A non insulated banana jack is located at the left front side of the unit to provide a ground for the ESD wrist strap plug Stacking Up to three 8600 chassis may be physically stacked safely on top of each other However for stacks of more than three start a second stack or mount in a 19 or 23 inch rack C...

Page 20: ...ssis on a desktop or tabletop HotWire 8600 DSLAM Chassis Installation page 2 5 2 Select the stack number Stacking the 8600 Chassis page 2 5 3 Interconnect the stack Interconnecting 8600 Systems page 2 8 4 Supply power to the 8600 chassis Supplying Power page 2 13 5 Install the MCC card into the base chassis Installing the MCC Card page 2 18 6 Install the DSL card into the 8600 chassis Installing D...

Page 21: ... or desktop Mounting brackets are provided for mounting in 19 or 23 inch racks The following procedures describe how to H Stack the 8600 chassis H Interconnect the chassis H Install the 8600 chassis into a rack with threaded screw holes H Install the 8600 chassis into a rack without threaded screw holes Stacking the 8600 Chassis Procedure To stack the 8600 chassis on a desktop or table select the ...

Page 22: ...ion number The base chassis containing the MCC card must be set to Stack Position 1 The chassis directly on top of the base chassis must be set to Stack Position 2 The chassis directly on top of chassis 2 must be set to Stack Position 3 and so on 97 15372 Base Unit Stack Position 1 Stack Position 2 Stack Position 3 4 6 5A 3 1 2 POSITION STACK ALM 5 FAN 4 6 5A 3 1 2 POSITION STACK ALM 5 FAN 4 6 5A ...

Page 23: ...ately 1 4 to 3 8 inch on 14 AWG copper wire 2 Loosen the screw on the GND lug located on the rear surface at the center of the HotWire 8600 DSLAM cover 3 Insert the stripped end of the wire into the open end of the GND lug and tighten the lug s screw Make sure it is making contact with the stripped portion of the wire ESD Wrist Strip Jack A non insulated banana jack is located at the left front si...

Page 24: ...g the other end of the 8 pin modular cable into the Management IN port of the 8600 chassis above dressing the cable as in the previous step 4 Repeat for the next 8600 chassis connecting the Management OUT port of Chassis 2 to the Management IN port of Chassis 3 Refer to Appendix B Pinouts for pin assignments NOTE Some installation configurations may require separation of 8600 systems in a stack an...

Page 25: ...SL DSL 1 2 3 DSL DSL DSL 1 2 3 DSL DSL DSL 1 2 3 DSL DSL DSL 2 1 5 4 3 8 7 6 11 10 9 14 13 12 17 16 15 Assigned DSL Slot Numbers Additional Systems Base Chassis 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 Software Assigned Physically Assigned NOTE This illustration depicts a stack of six HotWire 8600 systems which is valid for rack mounting However the same relationship of software assigned slot numbers a...

Page 26: ...ckets on the 8600 chassis by removing the two front screws on each side of the unit You will reuse these screws to secure the mounting brackets to the 8600 chassis For a 19 inch rack installation the notched flange of the mounting bracket is placed against the side of the 8600 chassis For a 23 inch rack installation the smaller flange of the mounting bracket is placed against the side of the 8600 ...

Page 27: ...ed from the sides of the unit 3 Determine the preferred placement of the 8600 chassis in the rack Then mark the appropriate locations for the mounting screws on the rack 4 Place the 8600 chassis against the front rails of the rack and secure with the appropriate mounting screws Repeat these steps for each succeeding 8600 chassis Front Rail 97 15353 ...

Page 28: ... smaller flange of the mounting bracket is placed against the side of the 8600 chassis 2 Determine the preferred placement of the 8600 chassis in the rack 3 Slip a speed nut onto each rail hole selected and align the hole of the speed nut with the hole in the rail Front Rail 97 15354 Speed Nut 4 Line up the chassis mounting bracket with the speed nut and start to rotate the screw into the chassis ...

Page 29: ...source Make sure that the dc power source wires are not powered i e the circuit breakers are open The ends of the power source wires 14 AWG 18 AWG solid or stranded wire must be stripped of insulation If the wires are not stripped strip the tip of each wire about 1 3 inch in length before inserting the wire into the appropriate terminal on the 48V input terminal block 1 Insert the following wires ...

Page 30: ...he 8600 chassis for power redundancy Make sure that the dc power source wires are not powered i e the circuit breakers are open The ends power source wires 14 AWG 18 AWG solid or stranded wire must be stripped of insulation to about 1 3 inch in length before plugging the wires into the appropriate terminal on the 48V input terminal block 1 Insert the following wires in the appropriate terminal and...

Page 31: ... s RTN wire RTN B return terminal 2 Dress the wires under the 8600 chassis to the left behind the support foot 97 15371 01 48V RT N F G A B A B 48 VD AC INPUT AC 48VDC CLASS 2 OR LIMITED PWR SOURCE RTN 48V A A B B T5A 250V 3 Power the HotWire 8600 DSLAM chassis by closing the circuit breakers or reinstalling the fuses 4 Make sure the DC PWR A and DC PWR B LEDs on the front panel are both ON green ...

Page 32: ... should be a non switched outlet to prevent accidentally turning off power 3 Make sure the PWR A LED on the front panel is ON green Using AC Power with DC Power Backup Procedure To supply both ac and dc power to the 8600 chassis for power redundancy Make sure that the dc power source wires are not powered i e the circuit breakers are open The ends of the dc power source wires 14 AWG 18 AWG solid o...

Page 33: ...early label these power source wires as 48V and RTN respectively Insert Power Source B s Into the Wire 48V B input terminal RTN wire RTN B return terminal 3 Dress the wires under the 8600 chassis to the left and behind the front left support foot 97 15447 01 48V RT N F G A B A B 48 VD AC INPUT AC 48VDC CLASS 2 OR LIMITED PWR SOUR RTN 48V A A B B T5A 250V 4 Plug the other end of the ac power cord i...

Page 34: ...is at a later time HANDLING PRECAUTIONS FOR STATIC SENSITIVE DEVICES This product is designed to protect sensitive components from damage due to electrostatic discharge ESD during normal operation When performing installation procedures however take proper static control precautions to prevent damage to equipment If you are not sure of the proper static control precautions contact your nearest sal...

Page 35: ...cess Control MAC address also referred to as the physical address This means that the new MCC card will have the same MAC address as the old one Installing DSL Cards Use a small to medium size flat blade screwdriver to install the DSL card NOTE The 8600 chassis are shipped with filler plates in Slots 1 2 and 3 If the slot where the DSL is to be installed has a filler plate it must be removed Do no...

Page 36: ... hand and on the back of the 8600 chassis with the other until the DSL s connector seats in its mating connector 5 Make sure the OK SYSTEM indicator on the DSL card faceplate is ON green For a more detailed explanation of the LEDs on the DSL card refer to the appropriate DSL card documentation 6 Secure the DSL card by fastening the screws on each end of the faceplate NOTE The DSL cards may be repl...

Page 37: ...will be ON If you are using a single ac power source then the green PWR A LED must be ON If you are using both an ac power source and a 48 Vdc power source then both the PWR A and PWR B LEDs must be ON The yellow FAN ALM LED on the front panel must be OFF Also check the SYSTEM LEDs on the MCC and DSL cards if you have not done so already The OK SYSTEM indicators on the cards must be in the ON stat...

Page 38: ...ch Use only CAT3 or better twisted pair network connection cables for DSL Termination Unit connections and interface patch cabling Untwisted analog cables of any length anywhere in the loop substantially contribute to crosstalk and reduced loop reach Make sure the main bundle of the loop is standard twisted pair voice cable CAT3 For multiple DSL circuits in the same main bundle choose non adjacent...

Page 39: ...e screw on the connector and replace with one of the three captive screws shipped with the unit Secure the Telco 50 pin cable by fastening the captive screw on the left 3 Tighten the cable tie on the right and cut off any excess cable tie 4 Make sure the other end is connected to the appropriate POTS splitter shelf MDF or demarcation point Refer to Appendix B Pinouts for pin assignments 97 15480 0...

Page 40: ...left leg 3 Plug the other end of the cable into your Ethernet hub or switch connector Refer to Appendix B Pinouts for pin assignments 97 15375 02 LAN WAN SLOT 2 A IN B DC PWR OUT SERIAL MCC 1 MANAGEMENT 3 A AC INPUT AC 48VDC CLASS 2 OR LIMITED PWR SOURCE RTN 48V A A B B T5A 250A LAN WAN SLOT 2 4 6 B 3 1 2 POSITION STACK ALM A IN B DC FUSES T4A MIN 48V 5 DC PWR FAN OUT SERIAL MCC 1 MANAGEMENT 3 LIN...

Page 41: ...e into the 10BaseT hub connector to the SNMP management system network Refer to Appendix B Pinouts for pin assignments 97 15376 02 LAN WAN SLOT 2 A IN B DC PWR OUT SERIAL MCC 1 MANAGEMENT 3 A AC INPUT AC 48VDC CLASS 2 OR LIMITED PWR SOURCE RTN 48V A A B B T5A 250V LAN WAN SLOT 2 4 6 B 3 1 2 POSITION STACK ALM A IN B DC FUSES t4a MIN 48V 5 DC PWR FAN OUT SERIAL MCC 1 MANAGEMENT 3 LINE 1 2 3 S Y S T...

Page 42: ...cessary Refer to Appendix B Pinouts for pin assignments 4 Configure your terminal or terminal emulator with the following settings Baud Rate 9600 Data Bits 8 Parity No Parity Stop Bits 1 Flow Control XON XOFF Terminal Type VT100 97 15377 02 LAN WAN SLOT 2 A IN B DC PWR OUT SERIAL MCC 1 MANAGEMENT 3 A AC INPUT AC 48VDC CLASS 2 OR LIMITED PWR SOURCE RTN 48V A A B B T5A 250V LAN WAN SLOT 2 4 6 B 3 1 ...

Page 43: ...inal Ready DTR For example AT D0 Procedure To connect the HotWire 8600 DSLAM chassis to a dial up modem 1 Connect an 8 pin modular plug ended serial cable into the MANAGEMENT SERIAL port of the HotWire 8600 2 Dress the serial cable under the 8600 chassis to the left and behind the support foot 3 Plug the other end of the cable into your modem s serial port using a DB25 RS 232 male adapter supplied...

Page 44: ...aris 2 or SUN OS 4 workstation 1 Execute a window manager program such as OpenWin 2 Execute a terminal emulator program 3 Set terminal type to VT100 4 Establish a telnet session by issuing the telnet command and providing the Management Domain IP address for the MCC card on the command line If you are using a PC establish a telnet session by issuing the telnet command and providing the Management ...

Page 45: ...card configuration from a network management workstation via a telnet session you must set the IP address and subnet mask of the MCC card using a terminal connected to the DSLAM s serial console interface before you can configure the cards remotely This section describes how to set the IP address and subnet mask of the MCC card Refer to the HotWire DSLAM for 8540 and 8546 DSL Cards User s Guide fo...

Page 46: ...f test completes the Who Am I screen will appear 2 From the Who Am I screen enter the Management Domain IP address of the MCC card and press the Return key For example if the IP address of the MCC card is 198 152 152 50 type this value at the nnn nnn nnn nnn prompt as illustrated below The system automatically calculates the subnet mask based on the IP address you enter ...

Page 47: ...bnet mask enter a new subnet mask and press Return The system highlights the OK to restart prompt 4 Type y at the yes no prompt to restart the card or n to decline the restart If you type y the card restarts You can now log in remotely using telnet or an SNMP NMS to configure the cards Refer to the HotWire DSLAM for 8540 and 8546 DSL Cards User s Guide for detailed instructions ...

Page 48: ...r service to the 8600 2 If there is no power at the terminal call the appropriate electrician Power LED is OFF PROBLEM One of the DC PWR LEDs is OFF due to a failure in a single chassis within a stack ACTION Go to the stack to see which chassis has the power failure To clear the power alarm remove the power from the chassis and disconnect the powered off chassis from the management daisy chain byp...

Page 49: ...LM LED is ON and DSL card is inoperative in Slot n ACTION 1 Using the HotWire DSLAM software choose Card Selection from the Main Menu to display the status of each DSL card 2 If a major alarm is indicated go to the MCC card and do a card reset Use HotWire DSLAM software to reset the DSL card Go to Configuration DSL Cards Reset_Slot Refer to the HotWire DSLAM for 8540 and 8546 DSL Cards User s Guid...

Page 50: ...the front panel of the carrier LED LED is Indicating DC PWR A Green Off Normal operation for Power Source A Low high or no voltage for Power Source A DC PWR B Green Off Normal operation for Power Source B Low high or no voltage for Power Source B FAN ALM Yellow Off Fan failure or a single fan in the Fan Module is working at less than 50 of its normal output Normal operation or no power to mounting...

Page 51: ...ribes the meaning and states of the LEDs on the MCC card faceplate Type LED LED is Indicating SYSTEM OK Green Winking Off Normal operation card functioning normally No power to card or card failure Alrm Amber Off Alarm present on MCC Normal operation no alarms Test Amber Off Test in progress Normal operation no tests ETHERNET TX Green Blinking Off Data is being transmitted from the MCC Inactive RX...

Page 52: ...n Modular Ethernet Connector for MCC Management Connector Pinouts The 8 pin interface for the MCC Management 10BaseT Ethernet connection has the following pin assignments Pin Number Use 1 TX Data 2 TX Data 3 RX Data 4 Reserved 5 Reserved 6 RX Data 7 Reserved 8 Reserved ...

Page 53: ...r 3 has the following pin assignments Pin Number Use 1 TX Data 2 TX Data 3 RX Data 4 Reserved 5 Reserved 6 RX Data 7 Reserved 8 Reserved 8 Pin Modular Management In and Out Connector Pinouts The 8 pin interface for the Management In and Out connections has the following pin assignments Pin Number Use 1 Mgt Data 2 Mgt Data 3 Fan Alarm 4 Ground 5 Power Alarm A 6 Power Alarm B 7 Mgt Clk 8 Mgt Clk ...

Page 54: ...tion 1 Reserved 2 Reserved 3 Reserved 4 Signal Ground 5 Receive Data 6 Transmit Data 7 Reserved 8 Reserved DB25 Adapter Pinouts The DB25 RS232 male adapter is used to convert the 8 pin serial interface to a standard RS 232 DB25 interface which can then be connected to a terminal computer or modem The following lists the pin assignments for the DB25 adapter 8 Pin Modular Serial Interface Pin Number...

Page 55: ...g Frame MDF The following table lists the pin assignments for each of these interfaces NOTE When the 8600 chassis is the base chassis the MCC is installed in Slot 1 and the Tips and Rings for Slot 1 are not connected internally to the DSL and are not active CONNECTOR DSL Slot Port CONNECTOR PINS Tip Ring Slot 1 Port 1 1 26 Slot 1 Port 2 2 27 Slot 1 Port 3 3 28 Slot 1 Port 4 4 29 Slot 2 Port 1 5 30...

Page 56: ...p of each other on a desktop or table In addition a standard 7 foot EIA cabinet can hold a maximum of 14 chassis Interfaces 48V power two pairs of screw terminals for A and B inputs Three 8 pin modular jacks for 10BaseT Network Access Provider interfaces One 50 pin Telco connector for DSL Loop interfaces One 8 pin modular jack for 10BaseT interface for the MCC card Two 8 pin modular jacks for dais...

Page 57: ...onfiguration with 3 DSL cards the system will not exceed 75 watts of power dissipation Each power version distributes 48 Vdc power from the power source to individual cards via the backplane Grounding A ground lug is located at the rear of the HotWire 8600 DSLAM at the center It accepts 14 AWG wire A non insulated banana jack is located at the left front of the 8600 DSLAM providing a ground for th...

Page 58: ...l that defines the IP as a chassis of information passed across an Internet and provides the basis for packet delivery service IP includes the ICMP control and error message protocol as an integral part The entire protocol suite is often referred to as TCP IP because TCP and IP are the two most fundamental protocols Internet Protocol Address A 32 bit address assigned to a host on a TCP IP network ...

Page 59: ...with the HotWire 8600 DSLAM chassis to provide lightning speed Internet or corporate LAN access Simple Network Management Protocol Multiple systems can be connected for cost effective management sharing Up to six HotWire 8600 DSLAM chassis can be stacked daisy chained to be managed by one MCC card in the base chassis The rate at which data flows from the Remote Terminal Units RTUs to the central o...

Page 60: ...2 25 to Ethernet hubs or switches 2 24 connectors 8 pin modular asynchronous terminal B 3 DB25 adapter B 3 LAN WAN B 2 management 10BaseT B 1 management IN and OUT B 2 Telco 50 pin for DSL loops and POTS splitters B 4 cooling specifications C 2 D dc power using a single dc power source 2 13 using two dc power source 2 14 document purpose iii DSL card 1 3 installing the card 2 19 removing the card ...

Page 61: ...oving the card 2 19 setting the IP address 3 1 setting the subnet mask 3 1 management information bases MIBs 1 4 Media Access Control MAC address 2 19 2 20 modem connection 2 27 N National Equipment Building Standards NEBS 2 7 O operating environment specifications C 2 organization of guide iv P package contents associated hardware 2 2 chassis 2 2 documentation 2 2 physical dimensions C 1 pinouts ...

Page 62: ... the stack 2 5 selecting the stack position 2 5 stacking considerations 2 3 stacking the chassis 2 5 summary of installation tasks 2 4 supplying power using a single dc power source 2 13 using ac power with dc power backup 2 16 using only ac power source 2 16 using two dc power source 2 14 T technical specifications C 1 terminal or computer connection 2 26 troubleshooting procedures 4 1 U unpackin...

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