US PATENT SUBCLASS 379 / 112
.~ Computer or processor control

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}
112.~ Computer or processor control {1}
113  DF  .~.~> Call traffic recording

DEFINITION

Classification: 379/112

Computer or processor control:

(under subclass 111) Subject matter wherein telephone usage determination is controlled by a digital signal processing calculating device.