Telecommunication customer interface

Details Telecommunication customer interface Telecommunication customer interface

1995-03-28

1997-06-03

Kuntz, Curtis

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

With blocking of normal usage

379 10, 379 15, 379 29, H04M 308, H04M 322

Patent

active

056362609

ABSTRACT:
A telecommunication network and switching system where digital circuits are supplied to customer terminals for dial-up services and where automatic testing of the access connections to the customer premises is performed while calls are not in progress. A loop test unit is provided at the customer's premises near to the customer digital line terminals able to detect a test sequence sent from an exchange when a call is not in progress, the test sequence being recognized by the loop test unit and a test sequence being returned to the exchange to enable the error performance of the link in both directions to be tested.

REFERENCES:
patent: 4560842 (1985-12-01), Homer
patent: 4575584 (1986-03-01), Smith
patent: 4670898 (1987-06-01), Pierce
patent: 4766594 (1988-08-01), Ogawa
patent: 4984262 (1991-01-01), Kumozaki
patent: 5224149 (1993-06-01), Garcia
patent: 5251204 (1993-10-01), Izawa
patent: 5343461 (1994-08-01), Barton
patent: 5359646 (1994-10-01), Johnson
patent: 5361293 (1994-11-01), Czerwiec
patent: 5490199 (1996-02-01), Fuller
"Ein neuer Standard verandert die Welt", Synhrone Digitale Hierarcie, pp. 56-59 and 62, Funkschau 14, 1991.

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