US PATENT SUBCLASS 379 / 22
.~ Of trunk or long line

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

1  DF  DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
22.~ Of trunk or long line {4}
23  DF  .~.~> Of line signalling
24  DF  .~.~> Electrical parameter measurement (e.g., attenuation)
25  DF  .~.~> Conductor identification or location
26  DF  .~.~> Fault detection or location (e.g., continuity, leakage)

DEFINITION

Classification: 379/22

Of trunk or long line:

(under subclass 1) Subject matter wherein a characteristic of an interexchange or in specified telephone conductor is evaluated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

27, for testing of a subscriber line or loop.