US PATENT SUBCLASS 379 / 27
.~ Of subscriber loop or terminal

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.~ Of subscriber loop or terminal {4}
28  DF  .~.~> Of data transmission instrument
29  DF  .~.~> Terminal arrangement to enable remote testing (e.g., testing interface)
30  DF  .~.~> Loop impedance (e.g., resistance, capacitance)
31  DF  .~.~> Of line signalling generator (e.g., dial, tone code generator)

DEFINITION

Classification: 379/27

Of subscriber loop or terminal:

(under subclass 1) Subject matter for evaluating, measuring, or monitoring a characteristic of a subscriber line or station.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for physical testing, in general.

381, Electrical Audio Signal Processing Systems and Devices,

58+, for evaluation of an audio device other than telephone equipment.