System for ISDN terminal adapter DCE for automatically negotiati

Details System for ISDN terminal adapter DCE for automatically negotiati System for ISDN terminal adapter DCE for automatically negotiati

1997-05-07

1999-08-03

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

709202, 709228, 709247, 395500, 370401, G06F 1314, G06F 1320

Patent

active

059319283

ABSTRACT:
Apparatus for an improved ISDN terminal adapter (5) and accompanying methods for use therein. The adapter provides automatic ISDN switch detection, automatic SPID configuration, baud rate unblocking and automatic data compression. Specifically, the adapter automatically provides B-channel data compression in the event the DTE is unwilling or unable to do so. Here, the adapter monitors negotiation, over an ISDN line, of a compression control protocol (CCP) between the DTE and its PPP peer (380). If the negotiations reveal that the DTE will not undertake compression, then the adapter will then automatically negotiate the protocol and thereafter, for the duration of a call, perform compression and decompression in lieu of the DTE.

REFERENCES:
patent: 5557749 (1996-09-01), Norris
patent: 5742773 (1998-04-01), Blomfield-Brown et al.
patent: 5768525 (1998-06-01), Kralowetz et al.
U.S. application No. 08/852,659, Best et al., filed May 7, 1997.
U.S. application No. 08/852,656, Best et al., filed May 7, 1997.
U.S. application No. 08/852,658, Brennan, filed May 7, 1997.

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