Modem with transient impairment detector

Details Modem with transient impairment detector Modem with transient impairment detector

1994-03-03

1995-04-18

Baker, Stephen M.

Excavating

370 13, 370 17, 371 201, H04J 314

Patent

active

054084750

ABSTRACT:
A frame code word (FCW) is inserted in a time division multiplexed slot in a modem data stream preferably using an embedded secondary channel. A receiving modem demultiplexes the FCW and compares it against the known transmitted FCW. Based upon the number of incorrect FCW's received, a reinitialization command is generated causing the modems to begin a retraining sequence-in view of the detected error condition.

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