1983-12-12
1985-07-16
Schreyer, Stafford D.
H04B 346
Patent
active
045298475
ABSTRACT:
A method and apparatus for locating faults in a transmission line as being on a customer side or a network side of the apparatus is disclosed. A maintenance termination unit (30) is described that includes a pair of normally open voltage sensitive switches (16) respectively connected in series with conductors (11,13) of a transmission loop (10) and a distinctive termination (23) connected between the conductors on the customer side of the switches. The distinctive termination includes a resistor (20) and oppositedly disposed diode (18) zener diode (19) pair.
REFERENCES:
patent: 4396809 (1983-08-01), Brunssen
patent: 4415779 (1983-11-01), Bowman
patent: 4438299 (1984-03-01), Tomim
AT&T Bell Laboratories
Newman Harry L.
Schreyer Stafford D.
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