US PATENT SUBCLASS 379 / 81
.~.~.~.~ Call termination responsive (e.g., hang-up)

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

67.1  DF  AUDIO MESSAGE STORAGE, RETRIEVAL, OR SYNTHESIS {13}
68  DF  .~ Dynamic audio signal recording or reproduction {4}
70  DF  .~.~ Call intercept or answering {7}
79  DF  .~.~.~ With specified call initiated cycle control circuitry {4}
81.~.~.~.~ Call termination responsive (e.g., hang-up)

DEFINITION

Classification: 379/81

Call termination responsive (e.g., hang-up):

(under subclass 79) Subject matter wherein the cycle control circuitry is responsive to a line condition representative of the cessation of telephonic communications (e.g., open circuit, dial tone presence).

(1) Note. Such cessation may be effected by the caller hanging up or being disconnected.