Protocol adaptation

Details Protocol adaptation Protocol adaptation

1992-03-05

1994-05-10

Dwyer, James L.

Telephonic communications

Substation or terminal circuitry

Conversion of signal form

379 93, H04M 1100

Patent

active

053115902

ABSTRACT:
A telecommunications terminal is provided with two protocols. After initialization and activation of one of the protocols, a status inquiry is sent to a digital exchange indicating the activated protocol. The telecommunications terminal is operated according to a received status message indicating the protocol being used by the digital exchange, or if none is received before elapse of a timer, according to the second of the two protocols.

REFERENCES:
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patent: 5012470 (1991-04-01), Shobu et al.
patent: 5193110 (1993-03-01), Jones et al.
patent: 5216704 (1993-06-01), Williams et al.
Austin et al., "The Universal Port Concept," ATT Technical Journal, Mar./Apr. 1989.
Hassler, "Multiprotokoll-controller fur High-Speed," Design and Elektronik 6 vom, Dec. 3, 1991, pp. 56-58.
IBM Technical Disclosure Bulletin, vol. 28, No. 3, Aug. 1985, pp. 924-925.
IBM Technical Disclosure Bulletin, vol. 26, No. 7A, Dec. 1985, pp. 3483-3484.
Document No.: ETS [CA]; Version: 1; Date: Jul. 19, 1990; "Integrated Services Digital Network (ISDN) . . . ".
Trouvat et al., "ISDN, Initial Results: Lessons for Tomorrow," ISSLS, Sep. 11-16, 1988, pp. 202-207.

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