US PATENT SUBCLASS 379 / 31
.~.~ Of line signalling generator (e.g., dial, tone code generator)

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

1  DF  DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
27  DF  .~ Of subscriber loop or terminal {4}
31.~.~ Of line signalling generator (e.g., dial, tone code generator)

DEFINITION

Classification: 379/31

Of line signalling generator (e.g., dial, tone code generator):

(under subclass 27) Subject matter for testing or measuring a voice frequency signalling generator or an impulsing signal producing arrangement, in a terminal.