Adtran Gmbh

Paul G Mc Elroy

James M Glass, Iii

Charles R Rehage

Michael T Lattanzi

Jonathan Aaron Wright

The inability of an ISDN equipment user to properly configure ISDN terminal equipment, even when provided with correctly assigned switch protocol, SPID and LDN parameters by a telephone service provider, is successfully remedied by a SPID/switch protocol detector. Upon being invoked by the user, the routine proceeds to conduct an iterative search of stored SPID formats associated with different central office switch protocols. SPIDs are assembled in accordance with the iteratively accessed SPID formats and directory number information that has been entered by the user. If an attempt to register a SPID is successful, the routine places a test call. If the test call is successful, the SPID and its associated switch protocol will have been identified, and the terminal equipment may place a call.

ISDN terminal equipment-resident mechanism for determining service profile identifiers and associated telecommunication switch protocol

ISDN terminal equipment-resident mechanism for determining service

An ISDN terminal adapter is capable of providing both digital and analog communication connectivity between a customer's data terminal equipment (DTE) and a digital communication link. The adapter includes a digital (ISDN) communication transceiver for transmitting and receiving digital communication signals on the ISDN link. A first digital communication connector is coupled with the DTE. A second digital communication connector is coupled with the customer's modem. An analog communication connector is coupled with an analog port of the modem. An analog/digital communication interface is coupled between the analog communication connector and the digital communication transceiver. A serial communication exchange processor is coupled with the first and second digital communication connectors and the transceiver. For all-digital (ISDN) connectivity, the processor provides a first communication path, exclusive of the modem, between the first digital communication connector and the transceiver, so that digitally formatted communication may take place between the DTE and the ISDN link. For digital-analog connectivity, the processor provides a second communication path that makes use of the customer's external modem, between the first digital communication connector and the transceiver, for communications between the DTE and the ISDN link.

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Huntsville, AL, United States of America

Paul G Mc Elroy