US PATENT SUBCLASS 379 / 372
.~ Signal reception at substation


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

350  DF  SUPERVISORY OR CONTROL LINE SIGNALLING {5}
372.~ Signal reception at substation {1}
373  DF  .~.~> Incoming call alerting (e.g., ringing) {3}


DEFINITION

Classification: 379/372

Signal reception at substation:

(under subclass 350) subject matter wherein a control or line signal is received at a subscriber terminal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

386, for systems where the signals are received at a point not specifically designated to be a subscriber terminal.