US PATENT SUBCLASS 379 / 243
.~ Class of service determination or transmission

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
243.~ Class of service determination or transmission {1}
244  DF  .~.~> In common control system

DEFINITION

Classification: 379/243

Class of service determination or transmission:

(under subclass 242) Subject matter to identify or supply a designation related to different types or levels of service applicable to calling station.