Telecommunications network

Details Telecommunications network Telecommunications network

1996-06-25

1998-10-27

Loomis, Paul

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 26, 379 21, 379 5, H04M 346, H04M 124

Patent

active

058287280

ABSTRACT:
Testing of pre-ringing signalling in a telecommunications network at customer's premises, for example, signalling to activate a caller display unit may be effected remotely. By establishing a test call through the network by way of a dial-back loop to a test telephone number, establishing a second call through the network to the required telephone and simulating pre-termination conditions at network termination, actual signalling tones at the network edge are monitored by corresponding apparatus to that present at customer premises.

REFERENCES:
patent: 4764949 (1988-08-01), Faith et al.
patent: 4862491 (1989-08-01), La Salle et al.

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