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Class Information
Number: 379/207.09
Name: Telephonic communications > Special services > Service trigger (activation or deactivation) > Line or loop condition > No answer (e.g., ringing signal, on-hook, idle) > Number of rings
Description: Subject matter wherein the implementation of a service is controlled in response to counting a predetermined number of rings without receiving an answer from a called party.


Patents under this class:

Patent Number Title Of Patent Date Issued
7233653 Method and installation for telephone inquiry Jun. 19, 2007
6668059 Telephone tuning and signaling system Dec. 23, 2003
5502761 Apparatus and method for relaying calling information to a pager or alternate telephone Mar. 26, 1996
5475737 Toll saver for centralized messaging systems Dec. 12, 1995
5475748 Automatic telephone system with function for multiple out-dialed calls per caller Dec. 12, 1995
4768221 Remote reprogramming system for telephone call forwarding service Aug. 30, 1988



 
 
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