3Com 980/000048/001 manual Front Panel LEDs

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Front Panel LEDs

2-7

PWR (Power) When lit indicates that the module is receiving power from the chassis’ backplane and that the power circuits are functioning correctly.

ALARM Lights to indicate that an event has occurred on one or more of the modems which has been configured to raise an alarm. See the AccessBuilder 7000 Access Concentrator User Guide for more information.

ALERT Lights to indicate that an event has occurred on one or more of the modems which has been configured to raise an alert. See the AccessBuilder 7000 Access Concentrator User Guide for more information.

TEST Indicates that one of the modems on the module is running a test. This may have been initiated either by an attached DTE, via the Management Controller Module or by a remote DTE to which the modem has a communications link.

SEND Flashes on and off to indicate that the selected modem is receiving data from the equipment attached to the DTE interface.

REC (Receive) Flashes on and off to indicate that the selected modem is passing received data from the line to the DTE interface.

CH 1 (Modem 1) Shows that Modem 1 is selected and that the LEDs show the status of this modem.

CH 2 (Modem 2 Shows that Modem 2 is selected and that the LEDs show the status of this modem.

CH 3 (Modem 3) Shows that Modem 3 is selected and that the LEDs show the status of this modem.

Push Button Selects the modem whose status is shown by the front panel LEDs. Toggle this button until the required Modem LED is lit.

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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 This table shows where to find specific information How to Use This GuideAbout this Guide IntroductionText conventions used in this guide are ConventionsIcon conventions that are used throughout this guide are Keep the unit away from radiators and heat sources Additional Safety InformationAbout this Guide Triple Modem Module Support for dial-up transmission protocols Principal FeaturesImplementation of V.32terbo Triple Modem Module Modem Connections To The Central Site Typical ApplicationsRegistering Ownership of your Triple Modem Module Pack Contents ChecklistPre-installation Requirements Triple Modem Module Overview Installation and OperationInstalling The Module Installing The Rear Card Installing the Rear CardExample of Installing a Front Card Installing the Front CardConnecting the Cables Front Panel LEDs Front Panel LEDs Installation and Operation Modem Health TroubleshootingTroubleshooting Guide Modem DTE Connection Modem does not accept or echo back AT commandsModem Telephone Line Connection Troubleshooting Perform a local analogue loop test Private-line Operation Dial Backup OperationOn-line Operation Interface PIN Assignments Modem SpecificationTransmitter / Receiver Specifications Autodial Autoanswer Protocols Physical DescriptionGeneral Approvals Requirements Approvals InformationAll the other apparatus shall comprise only Appendix a Modem Specification and Interface PIN Assignments Ringer Equivalence 21/V.11 DTE Port Pin Assignments24/V.28 35/V.36 Pstn Port Cable Pin Assignments Private Line Port Cable Pin Assignments 3Com Bulletin Board Service On-line Technical ServicesCall the telephone number nearest you World Wide Web SiteSupport from Your Network Supplier Support from 3Com Returning Products for Repair Appendix B Technical Support Numerics IndexSend LED Limited Warranty 408 764-5000 3/18/96 How to Identify and Resolve Radio-TV Interference Problems