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About the PathBuilder S21x Switch

1-5

Features

Software Functionality

Introduction

Depending on the operating software AppsWare package and optional daughtercard
installed the PathBuilder S21x switch can support the following functionality and
services.

Frame Relay & X.25
Service

The PathBuilder S21x switch provides serial devices with economical Ethernet LAN
access into public or private Frame Relay WAN. Where frame relay services are not
yet available, the PathBuilder S21x switch can provide network access over X.25
services. When frame relay services becomes available, the PathBuilder S21x switch
can be easily configured and integrated to support frame relay. This fast migration
reduced network downtime and protects hardware investments.

RFC 877 and 1356

The PathBuilder S21x switch supports encapsulation of IP datagrams and other
network layer protocols over X.25 as specified in RFC 877 and RFC 1356. This
allows for interoperability with Front End Processors (FEPs) that support X.25 and
IP traffic as well as router vendors supporting RFC 877/1356.

RFC 1490

The PathBuilder S21x switch supports encapsulation of multiple protocols over
frame relay as specified by RFC 1490.

Multiprotocol
Support

Support includes SDLC, Bisync, X.25, Async, IP/IPX, PPP, MLPPP, and Routing
and Bridging, as well as many other serial protocols. Refer to the Software Release
Notice which accompanied your unit for a complete listing of protocols supported by
the PathBuilder S21x switch.

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Summary of Contents for PathBuilder S21x

Page 1: ...3Com Corporation PathBuilder S21x Switch Installation Manual ...

Page 2: ...f the software is procured for use by the Department of Defense the following legend applies Restricted Rights Legend Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 If the software is procured for use by any U S Government entity other than the Departme...

Page 3: ...isclosed to others published or used in whole or in part for any purpose other than that for which it is being made available Use of software described in this document is subject to the terms and conditions of the 3Com Software License Agreement This document is for information purposes only and is subject to change without notice Part No T0032 Rev C First Printing October 1998 Manual is current ...

Page 4: ......

Page 5: ...t information Caution Caution provides you with information that if not followed can result in damage to software hardware or data Mise en Garde Une mise en garde vous fournit des informations qui si elles ne sont pas observées peuvent se traduire par des dommages pour le logiciel le matériel ou les données Vorsicht Ein Vorsichtshinweis macht Sie darauf aufmerksam daß Nichtbefolgung zu Software Ha...

Page 6: ... or registered trademarks of their respective companies or organizations Product Company Organization Crosstalk Digital Communications Associates Inc HyperTerminal Hilgreave Inc ProComm Datastorm Technologies Inc Windows Microsoft Corporation PathBuilder 3Com Corporation ...

Page 7: ...miliarize yourself with the PathBuilder S21x switch See Chapter 1 About the PathBuilder S21x Switch 2 Install the PathBuilder S21x switch hardware See Chapter 2 Installing the PathBuilder S21x Switch Hardware 3 Power up the PathBuilder S21x switch and access the control terminal port See Chapter 3 Powering on the PathBuilder S21x Switch ...

Page 8: ...owering on the PathBuilder S21x Switch the power up sequence and diagnostics and how to access the control terminal port Appendix A Specifications the physical and environmental specifications and power requirements for the PathBuilder S21x switch Appendix B PathBuilder S21x Switch Cabling identification of all cabling and connections for the PathBuilder S21x switch Appendix C Troubleshooting Your...

Page 9: ...es User Guides CD ROM and the 3Com WWW site http www 3com com PathBuilder S200 Series User Guides CD ROM The PathBuilder S200 Series User Guides CD ROM contains all PathBuilder S200 series switch documentation available at the time of release The PathBuilder S200 Series User Guides CD ROM is shipped with each PathBuilder S200 series switch product WWW Check the 3Com WWW site for the latest documen...

Page 10: ......

Page 11: ...talling Optional Daughtercards 2 11 Installing or Removing the Lithium Battery 2 12 Chapter 3 Powering on the PathBuilder S21x Switch Powering On The PathBuilder S21x Switch 3 2 Powerup Diagnostics 3 3 Accessing the Control Terminal Port 3 5 Appendix A Specifications Appendix B PathBuilder S21x Switch Cabling CTP Access Cable B 2 Voice Relay Cable B 3 Dual FXS Voice Relay Cable B 4 10BaseT Crossov...

Page 12: ...ii Contents continued Appendix D Technical Support ...

Page 13: ...vices to public and private networks services such as frame relay and X 25 The PathBuilder S21x switch is a desktop size standalone device supporting up to two optional daughtercards as shown in Figure 1 1 Using the optional daughtercards the PathBuilder S21x switch offers a flexible and cost effective solution for transporting data voice and video across a network Figure 1 1 The PathBuilder S21x ...

Page 14: ...minal or terminal emulation software to VT100 9600 bps 8 bit no parity 1 stop bit Dual Daughtercard Slots The PathBuilder S21x switch comes with two slots to support optional daughtercards This permits easy future expansion of the product Operating Software Operating software is compressed in FLASH memory and loaded into DRAM for operation The PathBuilder S21x switch supports these Applications Wa...

Page 15: ... FXS or FXO interface Both interfaces use RJ11 connectors Dual FXS Voice Relay Daughtercard The Dual FXS Voice Relay Daughtercard provides two FXS interface ports and support one voice channel each The FXS port uses RJ45 connectors RemoteVu Daughtercard The PathBuilder S21x switch supports video over Frame Relay using the RemoteVu daughtercard The RemoteVu Daughtercard provides two BNC connector v...

Page 16: ...er S21x Switch Features DIM Site Daughtercard The DIM Site daughtercard provides optional V 24 V 35 V 36 or V 11 electrical interfaces through a DB25 physical connector DSU DIM The PathBuilder S21x switch supports the DSU DIM ...

Page 17: ...ntegrated to support frame relay This fast migration reduced network downtime and protects hardware investments RFC 877 and 1356 The PathBuilder S21x switch supports encapsulation of IP datagrams and other network layer protocols over X 25 as specified in RFC 877 and RFC 1356 This allows for interoperability with Front End Processors FEPs that support X 25 and IP traffic as well as router vendors ...

Page 18: ...o and Legacy Protocols over Frame Relay Banking Application As shown in Figure 1 3 the PathBuilder S21x switch can support encapsulation of video and legacy protocol over frame relay This use of PathBuilder S21x switch suits banking applications such as Automated Bank Machines ABMs With Dial on Demand software feature enabled the PathBuilder S21x switch initiates a connection only when there is da...

Page 19: ... and Voice Relay Daughtercards The PathBuilder S21x switch supports voice video and data traffic between the branch and central office over pri vate or public frame relay network The Voice Relay Daughtercard supports telephones PBX and faxes Connect a telephone or PABX to one FXS port on the Voice Relay Daughtercard and all branch telephones have access to the central office PBX This eliminates lo...

Page 20: ...1 8 About the PathBuilder S21x Switch Target Application Environments ...

Page 21: ...ité à la norme EN 60950 n interconnecte ces ports qu avec des ports du même type sur des autres matériels Warnung Anschlusse die mit anderen Geraten verbindet werden konnen sind als SELV beschrieben Um Konformitat mit EN 60950 zu versichern sichern Sie es daß diese Anschlusse nur mit den des selben Type auf anderen Geraten verbindet werden Step To Perform This Action See This Procedure 1 Check the...

Page 22: ...nd the contents shown in Figure 2 1 Figure 2 1 PathBuilder S21x Switch Shipment Contents In Case of Damage or Missing Parts If the equipment is damaged contact the shipper If you have additional concerns about damaged or missing parts contact your nearest 3Com representative Pathbuilder S21x switch PathBuilder S21x Installation Manual RJ45 to DB25 CTP Cable PathBuilder S200 Series User Guides CD R...

Page 23: ... téléphone ou un vendeur d accessoires électroniques pour de plus amples informations sur les équipements de protection contre la foudre Si vous avez des problèmes engendrés par des surtensions dues à la foudre installez des protections contre les surintensités appropriées sur les lignes d alimentation et de données connectées à votre produit PathBuilder S200 series switch Vorsicht Alle PathBuilde...

Page 24: ...cuits de l unité ne placez aucun objet sur l unité à moins de 2 5 cm 1 pouce des conduits de ventilation du panneau avant et à moins de 30 5 cm 12 pouces de l arrière de l unité Vorsicht Zur Vermeidung einer Überhitzung der Geräteschaltkreise sollten Sie keine Gegenstände auf dem Gerät plazieren Zu den Entlüftungsöffnungen der Vorderabdeckung sollte ein Abstand von 2 5 cm und zur Rückseite des Ger...

Page 25: ...l Figure 2 3 illustrates the rear panel of the PathBuilder S21x switch optional daughtercards and the locations of cables that must be connected Caution Connectors showing this symbol must not be connected to Published Switched Telephone Networks PSTN Mise en Garde Les connecteurs marqués de ce symbole ne doivent pas être connectés au réseau téléphonique commuté public RTCP Vorsicht Stecker mit di...

Page 26: ...able PORT 2 PORT 3 POWER CTP 10B T PORT 1 DIM Site DSU Daughtercard RJ48S connector for DSU FXS FXO LOC REM Voice Relay Daughtercard Daughtercard DB25 connector for V 24 V 35 V 36 V 11 and DSU DIM RJ11 connector for FXS and FXO Ports DB25 connector for V 24 V 35 V 36 V 11 and DSU DIM FXS FXS LOC REM Dual FXS Daughtercard Two RJ11 connectors for FXS Ports RemoteVu Daughtercard 2 BNC and 1 RJ45 conn...

Page 27: ...d V 36 Max sync speed 2 mpbs V 24 Max sync speed 80 kpbs Max async speed 115 2 kbps Selectable DIM Site Daugh tercard DSU DIM DSU EIM Cable Assembly and Lease Line Telco Cable shipped with Integral DSU only DSU 56 kbps DTE DSU RJ48S DSU Daughtercard DSU Telco Cable shipped with DSU Daughtercard DSU 56 kbps DTE DSU RJ11 Voice Relay Daughtercard RJ11 to RJ11 Cable N A N A RJ45 S T Daughtercard RJ45 ...

Page 28: ... kbps DTE DSU RJ11 Voice Relay Daughtercard RJ11 to RJ11 Cable N A N A BNC video connectors RemoteVu Daughtercard BNC to BNC Cable RJ45 con nector RemoteVu Daughtercard RJ45 to RJ45 Cable RJ45 Dual FXS Daughtercard RJ45 to RJ45 Cable 3 DB25 V 11 V 24 V 35 V 36 DIM DB25 to DB25 Cable V 11 V 35 and V 36 Max sync speed 2 mpbs V 24 Max sync speed 80 kpbs Max async speed 115 2 kbps Selectable Integral ...

Page 29: ...lan to use a personal computer to configure the PathBuilder S21x switch you may need to purchase a DB25 male to DB9 female adapter for the serial port of your personal computer The serial ports on most personal computers require DB9 connectors 10BaseT Ethernet Cable Follow these guidelines for 10BaseT cable connections If you are connecting to a 10BaseT Hub use a standard UTP cable RJ45 to RJ45 If...

Page 30: ...ed as follows POWER DATA IN CTP PORT 4 DIAG DFLT NODE 3 3 TM RI Port MB RESET STATUS TEST WATCHDOG LAN 4 3 2 1 Default Node To reset all configurable parameters put switch in up position and Power Cycle or Reset then put switch in down position and Power Cycle or Restart again Control Port Switch Defaults Port 3 to 9600 bps 8N1 1 2 3 4 5 6 DATA OUT PORT Switch Posn Switch Name Down Up 1 RI TM Pin ...

Page 31: ...Option These daughtercards can be installed either in the factory or on site Refer to the PathBuilder S200 Series Daughtercard Installation Guide Part Number T0020 for complete daughtercard installation instructions Caution On site installation of these optional daughtercards should be undertaken by trained service technicians Mise en Garde L installation de ces cartes fille optionnelles doit être...

Page 32: ...s décrites dans cette section Si la batterie n est pas correctement installée elle risque d exploser après la mise en marche du produit PathBuilder S200 series switch et d endommager l unité Warnung Die in diesem Abschnitt aufgeführten Vorgänge sollten ausschließlich von qualifiziertem Servicepersonal durchgeführt werden Wenn die Batterie unsachgemäß installiert wird kann sie nach dem Einschalten ...

Page 33: ...tion to pull it toward you and off 2 Insert a flat head screwdriver in the slot above each of the six snap hinges on the sides of the unit and push downward The hinges snap out toward you 3 Repeat Steps 1 and 2 for the remaining hinges 4 Lift off the top cover Insert a flat head screwdriver in the slot above each of the six snap hinges on the sides of the unit and push downward The hinges snap out...

Page 34: ...o install and replace the battery Figure 2 6 Replacing the Battery Retaining Tabs Battery Holder Battery To remove the battery Using your fingers push the retaining tabs aside and pry the battery out of the holder To install the battery Place the battery in the holder with the positive side up and press down until the retaining tabs click into place ...

Page 35: ...ilder S21x Switch 3 1 Chapter 3 Powering on the PathBuilder S21x Switch Overview Introduction This chapter describes powering up the PathBuilder S21x switch interpreting LED display for power up diagnostics accessing the CTP ...

Page 36: ...mmer den Netzstecker des Gerätes aus der Steckdose ziehen Entfernen Sie nicht das Netzkabel von der Geräterückseite Warning Hazardous voltage from the telecommunications network may be accessible on un earthed units Disconnect all telecommunications cables before removing the main lead from the power supply Avertissement Des tensions dangereuses provenant des réseaux de télécommunication peuvent ê...

Page 37: ...anel LEDs TST PWR STS Power WD PathBuilder Series S200 Status Test Watchdog POWER DATA IN CTP PORT 4 DIAG DFLT NODE 3 3 TM RI Port MB RESET STATUS TEST WATCHDOG LAN 4 3 2 1 DATA OUT PORT Watchdog GREEN On Hardware or software failure Press Reset or Power Cycle to clear LED Off Processor OK Test RED Indicates status of test results On Test Failed Off Normal Condition Flashing Test in Progress Data ...

Page 38: ...rform a download of the software option bundle Powerup Failure If the STATUS light blinks continuously at a constant rate the software bundle in Flash memory is corrupted Perform a cold load of the software option bundle See the Software Installation and Coldloading Manual Part No T0028 for more information Stage when this indicates 1 POWER GREEN lights turns on PathBuilder S200 series switch is r...

Page 39: ...ly via your established IP network by telneting into the node from an IP network based personal computer or workstation You can connect to the CTP by entering atds0 CR after the PathBuilder S21x switch outputs the OK prompt CTP Access Via Remote X 25 or Frame Relay Network If the PathBuilder S21x switch is operating in an X 25 network or if Frame Relay Annex G is used to connect with other 3Com Pa...

Page 40: ......

Page 41: ...re The PathBuilder S21x switch supports these software applications ware IP Applications Ware Package IP IPX ApplicationsWare Package SNA Applications Ware Package Serial Protocol Applications Ware Package Multiservice Applications Ware Package Multimedia Applications Ware Package Environmental The following environmental conditions are required Operating temperature 32 to 104 F maximum 0 to 40 C ...

Page 42: ... 7 amps Power Supply Description PathBuilder S21x switch products are powered by a switch mode power supply with 22 5 watts maximum output power Safety PathBuilder S21x switch meets the following safety standards EN60950 CSA 950 UL Listed per UL 1950 Physical PathBuilder S21x switch has the following measurements Height 2 75 in 6 7 cm Length 6 7 in 17 cm Width 9 5 in 24 5 cm Weight 2 2 lb 1 0 kg ...

Page 43: ... 11 Cable V 24 Cable Daughtercard Cable Information Cables for optional daughtercards are shipped with the daughtercards If your PathBuilder S21x switch is shipped with pre installed daughtercards you will receive the cables For daughtercard installation and more cable information please refer to the PathBuilder S200 Series Daughtercard Installation Guide Part Number T0020 Ordering Cables To order...

Page 44: ... coldloading software images into a PathBuilder S21x switch Port 4 is a DCE This table identifies the pinout for this RJ 45 connector RJ45 Pin Signal Pin Connection on DB25F Adapter 1 not connected Request To Send RTS 4 2 DTE Ready DTR 20 3 Received Data RXD 3 4 not connected Data Carrier Detect DCD 8 5 Signal Ground 7 6 Transmitted Data TXD 2 7 Data Set Ready DSR 6 8 not connected Clear To Send C...

Page 45: ...and FXS port have the following pinout Warning The FXS Interface should only be connected to an analog telephone handset and or fax machine Warning The FXO Interface should only be connected to an analog PBX line Warning The PathBuilder S200 series switch Voice Relay daughtercard has not been certified for use in a PSTN Pin No FXS FXO Name Function Name Function 1 N A N A 2 N A Aux B External Hand...

Page 46: ... the Dual FXS Voice Relay Daughtercard has the following specification Connectors RJ45 to RJ45 Cable Color Gray Connector Pinout The RJ45 FXS port have the following pinout Warning The FXS Interface should only be connected to an analog telephone handset and or fax machine Pin No FXS Name Function 1 N A 2 N A 3 Loop B 4 Loop A 5 N A 6 N A ...

Page 47: ...he PathBuilder S21x switch has the following specifications Cable Type Category 3 or better Connectors RJ45 to RJ45 Color Gray Part Number 61798 01 Connector Pinout Four of the pins are used as shown below The connector pins are numbered indicated in the following diagram L Figure B 1 RJ45 Pinout Pin Pin 1 3 2 6 3 1 6 2 Pin 8 Pin 1 ...

Page 48: ...ace Cable BNC to BNC Cable RJ 45 Connector Camera Interface Connector Pinout This table describes the RJ 45 connector camera interface connector Pin Function 1 EIA 232 data input 2 EIA 232 data output 3 EIA 485 422 positive data output 4 EIA 485 422 negative data output 5 EIA 485 422 negative data input 6 EIA 485 422 positive data input 7 12V current available 50 mA 8 Ground ...

Page 49: ...x Switch Cabling B 7 DSU Daughtercard Cable DSU Daughtercard Cable DSU Daughtercard Cable Pinout The following table shows the pinouts for the RJ48S connector Pin Signal Function 1 TX TIP 2 TX RING 3 RX TIP 4 RX RING ...

Page 50: ...FRAME GROUND 2 TRANSMITTED DATA A 3 RECEIVED DATA A 4 REQUEST TO SEND 5 CLEAR TO SEND 6 DATA SET READY 7 SIGNAL GROUND 8 DATA CARRIER DETECT 13 TRANSMIT CLOCK B 14 TRANSMITTED DATA B 15 TRANSMIT CLOCK A 16 RECEIVED DATA B 17 RECEIVE CLOCK A 18 RECEIVE CLOCK B 19 RECEIVE CLOCK B 20 DATA TERMINAL READY 21 TRANSMIT CLOCK B 22 EXTERNAL TRANSMIT CLOCK B 24 EXTERNAL TRANSMIT CLOCK A 25 No Connection ...

Page 51: ...D 2 TRANSMITTED DATA A 3 RECEIVED DATA A 4 REQUEST TO SEND 5 CLEAR TO SEND 6 DATA SET READY 7 SIGNAL GROUND 8 DATA CARRIER DETECT 13 TRANSMIT CLOCK B 14 TRANSMITTED DATA B 15 TRANSMIT CLOCK A 16 RECEIVED DATA B 17 RECEIVE CLOCK A 18 RECEIVE CLOCK B 19 RECEIVE CLOCK B 20 DATA TERMINAL READY 21 TRANSMIT CLOCK B 22 EXTERNAL TRANSMIT CLOCK B 24 EXTERNAL TRANSMIT CLOCK A 25 TEST MODE V 36 ONLY ...

Page 52: ...A A 3 R A RECEIVED DATA A 4 C A CONTROL A 6 I B INDICATION B 7 SIGNAL GROUND 8 I A INDICATION A 13 S B TRANSMIT CLOCK B 14 T B TRANSMITTED DATA B 15 S A TRANSMIT CLOCK A 16 R B RECEIVED DATA B 17 RECEIVE CLOCK A 18 RECEIVE CLOCK B 19 RECEIVE CLOCK B 20 C B CONTROL B 21 S B TRANSMIT CLOCK B 22 X B EXTERNAL TRANSMIT CLOCK B 24 X A EXTERNAL TRANSMIT CLOCK A These V 11 signals are not used in the X 21...

Page 53: ...e 1 SHIELD FRAME GROUND 2 TRANSMITTED DATA A 3 RECEIVED DATA A 4 CONTROL A 6 INDICATION B 7 SIGNAL GROUND 8 INDICATION A 13 TRANSMIT CLOCK B 14 TRANSMITTED DATA B 15 TRANSMIT CLOCK A 16 RECEIVED DATA B 17 RECEIVE CLOCK A 18 RECEIVE CLOCK B 19 RECEIVE CLOCK B 20 CONTROL B 21 TRANSMIT CLOCK B 22 EXTERNAL TRANSMIT CLOCK B 24 EXTERNAL TRANSMIT CLOCK A ...

Page 54: ...r output if the port is configured to emulate a dial modem For this to work properly the RI TM switch of the port must be set to RI When the RI TM switch is set to TM this pin acts as an input and the TM output from the attached modem pin 25 on the modem comes into the 6500 on this pin Pin Function Signal Name 1 Shield Frame Ground 2 TXD 3 RXD 4 RTS 5 CTS 6 DSR 7 Signal Ground 8 DCD 14 DATA RESTRA...

Page 55: ...r the V 24 cable Pin Function Signal Name 1 Shield Frame Ground 2 TXD 3 RXD 4 RTS 5 CTS 6 DSR 7 Signal Ground 8 DCD 14 DATA RESTRAINT 15 TRANSMIT CLOCK 16 STANDBY INDICATOR 17 RECEIVE CLOCK 18 EXTERNAL RECEIVE CLOCK or V 54 Loop 3 20 DTR 21 V 54 Loop 2 22 No Connection 24 EXTERNAL TRANSMIT CLOCK 25 MAKE BUSY ...

Page 56: ...B 14 PathBuilder S21x Switch Cabling V 24 Cable ...

Page 57: ...r S21x Switch C 1 Appendix C Troubleshooting Your PathBuilder S21x Switch In This Appendix Introduction This appendix describes some of the actions you can take to correct problems you may be having with your PathBuilder S21x switch ...

Page 58: ...figure them in your PathBuilder S21x switch before connecting to the Internet or Intranet Checking the Physical Connection Use these procedures to check your PathBuilder S200 series switch connection and interface Remote Network Local PB S200 Network Remote PB S200 Your Local Network 905 555 6666 905 555 1234 10 10 10 1 10 10 20 1 10 10 20 2 10 10 30 0 10 10 10 0 Step Action 1 Ensure that the STS ...

Page 59: ...ction between your workstation PC and the PathBuilder S21x switch make sure that you put in the 50 Ω termination resistors at both ends of the line If you are connecting your LAN using the 10BaseT and a 10BaseT Hub check the display at the Hub to ensure that the connection between PathBuilder S21x switch and the Hub is correct Most Hubs have LEDs that stay ON when the carrier is detected Change th...

Page 60: ...t increases but the Tx Frame Count does not the problem is most likely due to misconfiguration in the IP router Interface 1 Make sure that the IP addresses and IP address mask select menu option Router IP Interfaces Interface 1 are set properly Step Action Step Action 1 Confirm that the IP interfaces either 5 or 6 of the WAN link that you are trying to ping are configured for Enable Select menu it...

Page 61: ...e latest networking information on the 3Com Corporation World Wide Web site by entering the URL into your Internet browser http www 3com com This service provides access to online support information such as technical documentation and software library as well as support options ranging from technical education to maintenance and professional services 3Com FTP Site Download drivers patches and sof...

Page 62: ...ance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Product model name part number and serial number A list ...

Page 63: ...a Indonesia Japan Malaysia New Zealand Pakistan Philippines 1 800 678 515 800 933 486 61 2 9937 5085 001 800 61 009 0031 61 6439 1800 801 777 0800 446 398 61 2 9937 5085 1235 61 266 2602 P R of China Singapore S Korea From anywhere in S Korea From Seoul Taiwan R O C Thailand 10800 61 00137 or 021 6350 1590 800 6161 463 82 2 3455 6455 00798 611 2230 0080 611 261 001 800 611 2000 Europe From anywher...

Page 64: ...011 44 1442 435860 011 44 1442 435718 From the following European countries you may call the toll free numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K 06 607468 0800 71429 800 17309 0800 113153 0800 917959 0130 821502 00800 12813 1800553117 177 3103794 ...

Page 65: ...rd Dual Slots 1 2 Daughtercards 1 2 DSU 1 3 options 2 11 DSU daughtercard overview 1 3 E Electromagnetic specifications A 1 Environmental specifications A 1 F fax service 3ComFacts 2 Front Panel 3 3 I Installing PathBuilder S21x Switch 2 5 L List of parts 2 2 M Missing parts what to do 2 2 Multiprotocol support 1 5 N network supplier support 2 O online technical services 1 Ordering information Pat...

Page 66: ...3 Special notices description v Specifications electromagnetic A 1 environmental A 1 physical A 2 power requirements A 2 safety A 2 T technical support 3Com URL 1 bulletin board service 2 fax service 2 network suppliers 2 product repair 4 Troubleshooting C 1 configuration C 2 U Unpacking parts list 2 2 URL 1 V Vanguard 320 1 1 overview 1 1 W warning definition v World Wide Web WWW 1 ...

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