Method and apparatus for initializing ISDN adapter cards in a wo

Details Method and apparatus for initializing ISDN adapter cards in a wo Method and apparatus for initializing ISDN adapter cards in a wo

1993-11-12

1996-06-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 851, 3701101, 34082508, 371 53, H04L 522

Patent

active

055306926

ABSTRACT:
A method for initializing ISDN adapter cards installed within a workstation having a main processor and an ISDN primary adapter for connecting the ISDN adapter cards to an ISDN primary gateway. Each ISDN adapter card has circuits for handling at least one B-channel, and a first processor associated with memory storage. The ISDN primary adapter includes a second processor associated with a second memory storage. In response to the reception of a specific polling pattern transmitted to each adapter card by the primary adapter, a pattern is transmitted to the workstation processor for requesting the loading of the second memory storage with operational code transferred from the workstation to the ISDN adapter card. The ISDN primary adapter, in response to the request pattern received by the main processor, transmits a second pattern via the ISDN adapter card that transmitted the first pattern, so that the main processor in the workstation and the processor in the ISDN primary adapter recognize the ISDN adapter card that transmitted the patterns to the workstation and to the ISDN primary adapter as the master ISDN adapter card for transmission of control information on the D-channel.

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IEEE International Conference on Communications '87, vol. 3, 10 Jun. 1987, Seattle, US pp. 1356-1360 Kuzyszyn and Park "ISDN Protocol and Service Verification and Performance Testing" pp. 1357-1359: Sec. 3 ISDN Network Test Sys.

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