| 1 |
| Patent ID | Title | Date Filed |
| 5274699 | Method for providing caller identification to a call recipient
| July 24, 1992 |
| 5251255 | Processing interactions among telecommunications call features
| April 17, 1991 |
| 5179550 | System and method for controlling a multi-point matrix switch
| March 7, 1991 |
| 5155759 | Control method for cordless telephone which displays identities of responding called parties
| May 17, 1991 |
| 5136690 | Dynamic graphical analysis of network data
| March 21, 1991 |
| 5023904 | Direct telephone dial ordering service
| October 12, 1989 |
| 4914689 | Reverse automatic number identification system
| December 22, 1987 |
| 4888797 | Circuit protection device
| October 16, 1987 |
| 4866758 | Phone management server for use with a personal computer LAN
| October 31, 1988 |
| 4829563 | Method for predictive dialing
| April 7, 1988 |
| 4805205 | Method and device for establishing bidirectional communications between persons located at different geographically distant stations
| May 4, 1987 |
| 4797913 | Direct telephone dial ordering service
| August 4, 1987 |
| 4754475 | Calling line tracing system and identification detector
| July 22, 1987 |
| 4744103 | Computer controlled multi-link communication system
| November 27, 1985 |
| 4599493 | Multi-line telephone control system
| August 28, 1984 |
| 4573047 | Binary selector stage and a selector and selector system comprising such selector stages
| January 28, 1983 |
| 4555594 | Telephone interexchange signaling protocol
| August 3, 1983 |
| 4476349 | Call message service
| March 30, 1982 |
| 4464543 | Network control center call trace
| December 1, 1982 |
| 4445001 | Circuit arrangement for identifying telephone subscribers
| March 2, 1982 |
| 4401856 | Control system for handling direct inward dialed telephone calls
| May 13, 1981 |
| 4375582 | Telephone answering system and method
| February 4, 1981 |
| 4320258 | Arrangement for requesting service for called telephone subscribers
| July 7, 1980 |
| 4289931 | Security identification system using pulse code modulation
| November 28, 1979 |
| 4286118 | Data distribution system for private automatic branch exchange
| July 2, 1979 |
| 4256928 | Telephone call diverting and answering system
| September 28, 1979 |
| 4210783 | Digitally controlled telephone answering switching system
| October 18, 1976 |
| 4200772 | Computer controlled telephone answering system
| October 18, 1976 |
| 4159402 | Means for identifying subscriber lines
| September 13, 1977 |
| 4119805 | Line-control unit for telecommunication system
| June 20, 1977 |
| 4081614 | Supervised single link telephone system
| April 14, 1977 |
| 4072825 | Hotel/motel automatic control system
| June 30, 1976 |
| 3987252 | Computer controlled telephone answering system
| June 27, 1975 |
| 3967074 | Telephone station identification system
| June 30, 1975 |
| 3920908 | Buyer credit service for a telephone system
| June 25, 1974 |
| 3917915 | Telephone service observation system
| July 9, 1973 |
| 3904830 | Call tracing and identification system
| July 3, 1972 |
| RE30903 | Computer controlled telephone answering system
| October 17, 1978 |
| 1 |