US PATENT SUBCLASS 379 / 32
.~ Indication of nonstandard condition of telephone equipment

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

1  DF  DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
32.~ Indication of nonstandard condition of telephone equipment {1}
33  DF  .~.~> Alarm or emergency (e.g., cut line)

DEFINITION

Classification: 379/32

Indication of nonstandard condition of telephone equipment:

(under subclass 1) Subject matter for monitoring the condition of telephone equipment and providing a perceptible indication of a fault or other improper equipment condition.

(1) Note. Diagnostic testing of equipment responsive to a fault only during performance of the test is excluded from this subclass and classified in subclasses 2-30 above.