Test apparatus and process for digital data service system

Details Test apparatus and process for digital data service system Test apparatus and process for digital data service system

1992-04-03

1994-04-05

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 95, 370 13, 370 15, H04B 346

Patent

active

053012070

ABSTRACT:
Loop circuits lacking byte alignment are tested by test equipment signals at 9.6 kbps transmitted over a DS.phi. format 19.2 kbps communication network. Upon indication of loss of 19.2 kbps framing, return signals from the loop are reformatted into a 9.6 kbps format by selecting proper return bytes using a logic system stored in an office channel unit (OCU).

REFERENCES:
patent: 4213007 (1980-07-01), Funk
patent: 4428076 (1984-01-01), Schuon
patent: 4862480 (1989-08-01), Gupta
patent: 4949355 (1990-08-01), Dyke et al.
patent: 5166923 (1992-11-01), Ohmori et al.

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