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Class Information
Number: 379/207.08
Name: Telephonic communications > Special services > Service trigger (activation or deactivation) > Line or loop condition > No answer (e.g., ringing signal, on-hook, idle)
Description: Subject matter wherein the implementation of a service is controlled in response to receiving an indication that a called party is not at a called location.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7512421 |
Method for setting substitute ringback tone of calling party in mobile communications system |
Mar. 31, 2009 |
| 7336777 |
Method and apparatus for managing presenting and changing ring-back sounds in subscriber-based ring-back sound service |
Feb. 26, 2008 |
| 7184532 |
Dynamic ringback services |
Feb. 27, 2007 |
| 6823057 |
Methods and apparatus for notifying subscriber's of forwarded calls |
Nov. 23, 2004 |
| 6795541 |
Method, apparatus and system for completing a call when a called party has not answered the call |
Sep. 21, 2004 |
| 6668059 |
Telephone tuning and signaling system |
Dec. 23, 2003 |
| 6639973 |
Mobile originator call control |
Oct. 28, 2003 |
| 6597764 |
Communication device with main telecommunication unit that allows designation of a selected subsidiary telecommunication unit |
Jul. 22, 2003 |
| 6327360 |
System for managing office data in an exchange, subscriber's number assigning system, and same number migrating system |
Dec. 4, 2001 |
| 5784438 |
Automatic callback system and method |
Jul. 21, 1998 |
| 5761277 |
personal mobile communication system |
Jun. 2, 1998 |
| 5712902 |
Telecommunications answering feature method and apparatus |
Jan. 27, 1998 |
| 5627875 |
Method in a telephone system for reaching a subscriber under busy/no answer conditions and ring/no answer conditions |
May. 6, 1997 |
| 5583564 |
Intelligent call forwarding with videophone display of forwarding destination |
Dec. 10, 1996 |
| 5548637 |
Method and apparatus for locating personnel and objects in response to telephone inquiries |
Aug. 20, 1996 |
| 5530931 |
Method and apparatus for providing a look ahead feature for enhanced call forwarding in a telecommunications system |
Jun. 25, 1996 |
| 5206901 |
Method and apparatus for alerting multiple telephones for an incoming call |
Apr. 27, 1993 |
| 5027384 |
Personalized automatic call routing |
Jun. 25, 1991 |
| 5018194 |
Electronic switching system having call-forwarding function |
May. 21, 1991 |
| 4873717 |
Call coverage arrangement |
Oct. 10, 1989 |
| 4723273 |
Discretionary call forwarding |
Feb. 2, 1988 |
| 4660220 |
No answer mode for telephone systems |
Apr. 21, 1987 |
| 4166929 |
Interoffice callback arrangement |
Sep. 4, 1979 |
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