US PATENT SUBCLASS 379 / 240
.~.~ Interexchange trunk circuit

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

219  DF  PLURAL EXCHANGE NETWORK OR INTERCONNECTION {6}
229  DF  .~ Interexchange signalling {6}
240.~.~ Interexchange trunk circuit {1}
241  DF  .~.~.~> Glare or simultaneous seizure mitigation

DEFINITION

Classification: 379/240

Interexchange trunk circuit:

(under subclass 229) Subject matter including trunk circuit switching.

SEE OR SEARCH THIS CLASS, SUBCLASS:

333, for subscriber line and trunk switching.