Testing system for local subscribers

Details Testing system for local subscribers Testing system for local subscribers

1991-10-24

1993-03-16

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 29, 379 8, H04M 124, H04M 330

Patent

active

051951240

ABSTRACT:
A test system for local subscriber lines, which is used with a telephone communication system having a central office exchange, local subscribers accommodated by the central office exchange, and intervening units, i.e., a central office terminal, a subscriber side remote terminal, and a transmission line connected therebetween. This test system carries out a remote test and a local test independently by using a test line connected between remote test equipment and the remote terminal in which an artificial off-hook creation unit is introduced. This unit is made active when a local test is carried out for each subscriber line, to thereby avoid an occurrence of errors in the remote test.

REFERENCES:
patent: 3773986 (1973-11-01), Tremblay
patent: 4424421 (1984-01-01), Townsend et al.

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