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Class Information
Number: 379/207.07
Name: Telephonic communications > Special services > Service trigger (activation or deactivation) > Line or loop condition > Transition from on-hook to off-hook (e.g., idle to busy)
Description: Subject matter wherein the implementation of a service is controlled in response to receiving an indication that the party has initiated a call, such as by lifting a handset off the hookswitch of the party s telecommunications device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7308081 |
Methods and systems for telephony call completion |
Dec. 11, 2007 |
| 6744873 |
Telephone accessory device |
Jun. 1, 2004 |
| 6639973 |
Mobile originator call control |
Oct. 28, 2003 |
| 6453023 |
Voice mail intervention |
Sep. 17, 2002 |
| 6389118 |
Methods and apparatus for connecting a telephone subscriber to a peripheral device |
May. 14, 2002 |
| 5949864 |
Fraud prevention apparatus and method for performing policing functions for telephone services |
Sep. 7, 1999 |
| 5949873 |
Method of providing centrex type operation using a PBX and a central switching office |
Sep. 7, 1999 |
| 5949852 |
Method for recording messages for absent parties |
Sep. 7, 1999 |
| 5815562 |
Apparatus and method for providing a user with one telephone number that rings phones on heterogeneous systems worldwide |
Sep. 29, 1998 |
| 5802160 |
Multi-ring telephone method and system |
Sep. 1, 1998 |
| 5784437 |
Electronic switch connected to intelligent peripheral while permitting call processing of dialed digits |
Jul. 21, 1998 |
| 5761277 |
personal mobile communication system |
Jun. 2, 1998 |
| 5757902 |
Telephone exchange for wire telephone and radio telephone |
May. 26, 1998 |
| 5583923 |
Telephony network having no-ring telemetry call aborted in favor of incoming telephony calls |
Dec. 10, 1996 |
| 5546451 |
Call waiting cancellation device |
Aug. 13, 1996 |
| 5454032 |
Method of establishing communication link to one of multiple devices associated with single telephone number |
Sep. 26, 1995 |
| 5317629 |
Data communication apparatus connectable with a plurality of telephone sets and a telephone line |
May. 31, 1994 |
| 5313517 |
Automatic busy message sending system for telephone communication |
May. 17, 1994 |
| 5206901 |
Method and apparatus for alerting multiple telephones for an incoming call |
Apr. 27, 1993 |
| 5142569 |
Apparatus for selectively enabling subscriber device to respond to ringing signal in dependence upon ringing cadence |
Aug. 25, 1992 |
| 5029202 |
Incoming telephone call director |
Jul. 2, 1991 |
| 4969186 |
Telephone message waiting system and apparatus |
Nov. 6, 1990 |
| 4893335 |
Remote access telephone control system |
Jan. 9, 1990 |
| 4879743 |
PBX and adjunct using multi-frequency tones for communication therebetween |
Nov. 7, 1989 |
| 4139739 |
Telecommunications call back system |
Feb. 13, 1979 |
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