3Com 980/000048/001 manual Appendix a Modem Specification and Interface PIN Assignments

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A-6 APPENDIX A: MODEM SPECIFICATION AND INTERFACE PIN ASSIGNMENTS

CAUTION: Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type of battery as specified by the manufacturer. A used battery must be disposed of in accordance with the manufacturer’s instructions.

PBX and PABX Application

This unit has been approved for use of the following facilities.

Loop-disconnect and multi-frequency signalling.

Storage of telephone numbers for retrieval by a predetermined code.

Detection of initial proceed indication.

Detection of secondary proceed indication.

Operation in the absence of proceed indication.

Automatic dialling facilities.

Tone detection, for example, ring tone, busy tone.

Automatic answering of incoming calls.

Automatic clearing from call originating end.

Call progress monitor.

Series connection (via optional cable).

Modem.

Any other usage will invalidate the approval of the apparatus if as a result it then ceases to conform to the standards against which approval was granted.

This unit is only approved for compatible PBXs. The supplier of your unit should be consulted for an up-to-date list of PBXs with which this unit is compatible.

There is no guarantee of correct working in all circumstances. Any difficulty should be referred to the supplier of the unit.

This unit is suitable for connection to PBXs which return secondary proceed indication.

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Contents Accessbuilder Triple Modem Module User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Important Safety Information Wichtige Sicherheitshinweise ’INFORMATION DE Sécurité Importante Page Contents Modem Specification and Interface PIN Assignments Index Limited Warranty FCC Class a Verification Statement Page About this Guide How to Use This GuideThis table shows where to find specific information IntroductionConventions Icon conventions that are used throughout this guide areText conventions used in this guide are Additional Safety Information Keep the unit away from radiators and heat sourcesAbout this Guide Triple Modem Module Principal Features Support for dial-up transmission protocolsImplementation of V.32terbo Triple Modem Module Typical Applications Modem Connections To The Central SitePack Contents Checklist Registering Ownership of your Triple Modem ModulePre-installation Requirements Triple Modem Module Installation and Operation OverviewInstalling The Module Installing the Rear Card Installing The Rear CardInstalling the Front Card Example of Installing a Front CardConnecting the Cables Front Panel LEDs Front Panel LEDs Installation and Operation Troubleshooting Troubleshooting GuideModem Health Modem does not accept or echo back AT commands Modem DTE ConnectionModem Telephone Line Connection Troubleshooting Perform a local analogue loop test Dial Backup Operation On-line OperationPrivate-line Operation Modem Specification Transmitter / Receiver SpecificationsInterface PIN Assignments Autodial Autoanswer Physical Description ProtocolsApprovals Information General Approvals RequirementsAll the other apparatus shall comprise only Appendix a Modem Specification and Interface PIN Assignments Ringer Equivalence DTE Port Pin Assignments 21/V.1124/V.28 35/V.36 Pstn Port Cable Pin Assignments Private Line Port Cable Pin Assignments On-line Technical Services 3Com Bulletin Board ServiceWorld Wide Web Site Call the telephone number nearest youSupport from Your Network Supplier Support from 3Com Returning Products for Repair Appendix B Technical Support Index NumericsSend LED Limited Warranty 408 764-5000 3/18/96 How to Identify and Resolve Radio-TV Interference Problems