US PATENT SUBCLASS 379 / 93.06
.~.~.~ Digital

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

90.01  DF  TELEPHONE LINE OR SYSTEM COMBINED WITH DIVERSE ELECTRICAL SYSTEM OR SIGNALLING (E.G., COMPOSITE) {8}
93.01  DF  .~ Having transmission of a digital message signal over a telephone line {9}
93.05  DF  .~.~ Terminal interface circuitry {2}
93.06.~.~.~ Digital

DEFINITION

Classification: 379/93.06

Digital:

(under subclass 93.05) Subject matter wherein the interface circuitry is connected to a telephone line in which the information is encoded as a series of ones and zeros.