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Enhanced calling number delivery service system

  • US 4,873,719 A
  • Filed: 11/18/1988
  • Issued: 10/10/1989
  • Est. Priority Date: 11/18/1988
  • Status: Expired due to Fees
First Claim
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1. A method of controlling central office equipment which allows an incoming caller directory or keyed-in telephone number or name, or a faxed document to be transmitted in DTMF signals form over a called customer busy, idle or in-use line while said called customer may or may not be engaged in an existing ongoing telephone conversation with another caller, and an apparatus for receiving said transmitted DTMF signals and converting said DTMF signals to analog signals to be stored to memory for later recall, display, redialing or printing, comprising the steps of:

  • (a) detecting, determining whether said called customer telephone line is busy, idle or in-use;

    (b) verifying said called customer subscription to calling number delivery service;

    (c) verifying said called customer subscription to call-waiting;

    (d) counting a preselected number of said call-waiting tone signals on said called customer said in-use line;

    (e) counting a preselected number of rings on said called customer said idle line;

    (f) cancelling said rings to said incoming caller after said preselected number of said call-waiting tone signals on said called customer said in-use line have expired;

    (g) cancelling said rings to said called customer and to said incoming caller after said preselected number of said rings on said called customer said idle line have expired;

    (h) enabling, connecting a prerecorded announcement to said incoming caller immediately after said detecting a busy condition on said called customer said busy line;

    (i) enabling, connecting said prerecorded announcement to said incoming caller immediately after said cancelling of said rings to said incoming caller;

    (j) responding to said prerecorded announcement by permitting said incoming caller or operator to either press the * code key plus any keyed-in telephone number or name on the touchtone telephone which receives keyed digits to central office multifrequency receiver memory, or permit said incoming caller to press the #code key on said touchtone telephone which automatically transmits said telephone number of said incoming caller from the originating office stored program controlled system memory to which said incoming caller is connected, to the terminating office stored program controlled system memory to which said called customer is connected, or permit said incoming caller to terminate the call by hanging up;

    (k) converting said directory telephone number in said terminating office said stored program controlled system memory from digital signals to analog signals to DTMF signals;

    (l) enabling and connecting central office multifrequency sender switch to said called customer said busy, idle or in-use voice channel and transmit either said keyed digits from said multifrequency receiver memory or said DTMF signals from said terminating office said stored program controlled system memory to said called customer premises equipment;

    (m) receiving, displaying and storing to said premises equipment said keyed digits or said DTMF signals which are converted to analog signals for later recall and or redialing; and

    (n) terminating said calling number delivery service process after receipt of said keyed digits or said DTMF signals to said premises equipment.

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