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Browse Prior Art Database

Modom Failure Remote Identification

IP.com Disclosure Number: IPCOM000045476D
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Barlet, J: AUTHOR [+3]

Abstract

Modern data transmission includes a number of modem elements interconnected through transmission lines. In this case, cost effectiveness of the system requires a quick location of any failing elements. And, for that purpose, the modems have been individually provided with an alarm tone generator which, in case of modem failure, sends a tone to a central location to signalize the occurrence of the failure. The central location will then initiate a test procedure aimed at localizing the failure element. Obviously, one should first determine which, the leased line or a modem, is the cause of the failure.

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Modom Failure Remote Identification

Modern data transmission includes a number of modem elements interconnected through transmission lines. In this case, cost effectiveness of the system requires a quick location of any failing elements. And, for that purpose, the modems have been individually provided with an alarm tone generator which, in case of modem failure, sends a tone to a central location to signalize the occurrence of the failure. The central location will then initiate a test procedure aimed at localizing the failure element. Obviously, one should first determine which, the leased line or a modem, is the cause of the failure.

In addition, line problems in a number of instances are being solved by providing the transmission system with switched network backup facilities.

In these instances, a piece of hardware may be added which, when activated by the ring signal received from the switched network coupling circuitry, initiates a modem self-test and, in case of negative results, triggers the alarm tone generator. If the alarm tone is not received at the central station, the leased line may be determined as the cause of the failure.

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