US PATENT SUBCLASS 379 / 93.01
.~ Having transmission of a digital message signal over a telephone line

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.~ Having transmission of a digital message signal over a telephone line {9}
93.02  DF  .~.~> Access restricting {2}
93.05  DF  .~.~> Terminal interface circuitry {2}
93.08  DF  .~.~> Transmission scheme (e.g., compression/decompression, transmission rate)
93.09  DF  .~.~> Switching between different terminal types (e.g., voice/data switch) {1}
93.12  DF  .~.~> Sales, ordering, or banking system
93.13  DF  .~.~> Amusement (e.g., game, lottery)
93.14  DF  .~.~> Having switching station {1}
93.17  DF  .~.~> Having station display {7}
93.26  DF  .~.~> By voice frequency signal (e.g., tone code) {3}

DEFINITION

Classification: 379/93.01

Having transmission of a digital message signal over a telephone line:

(under subclass 90.01) Subject matter for transfer of message information by either a multi-level pulse signal or a data signal consisting of a series of ones and zeros, over a line specifically described as a telephone line.

SEE OR SEARCH CLASS

370, Multiplex Communications, appropriate subclasses for simultaneous voice and data communications.

375, Pulse or Digital Communications,

222, for modems or data sets, per se.

709, Electrical Computers and Digital Data Processing Systems: Multiple Computer or Process Coordinating,

200+, for data transferring among multiple computer and digital processing systems. 710, Electrical Computers and Digital Data Processing Systems: Input/Output,

1+, for transferring data from one or more peripherals to one or more computers or digital data processing systems for the latter to process, store, or further transfer or for transferring data from the computers or digital data processing systems to the peripherals.