US PATENT SUBCLASS 379 / 114
.~ Call charge metering or monitoring

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

111  DF  WITH USAGE MEASUREMENT (E.G., CALL OR TRAFFIC REGISTER) {3}
114.~ Call charge metering or monitoring {5}
115  DF  .~.~> Interexchange operations {1}
117  DF  .~.~> Of station on polystation or party line {1}
119  DF  .~.~> Hardcopy record generating (e.g., ticket printing) {1}
121  DF  .~.~> At central office {4}
130  DF  .~.~> At subscriber station {1}

DEFINITION

Classification: 379/114

Call charge metering or monitoring:

(under subclass 111) Subject matter for a particular telephone set or the cost to a subscriber.