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| Number | Title | Issue Date |
| 5416780 | Telecommunications system and protocol for avoiding message collisions on a multiplexed communications link A location independent personal telecommunications system is presented that utilizes an out-of-band bi-directional burst data communications network to assist in the routing of personal communications via an in-band voice and data communications network. ... | 05/16/1995 |
| 5315636 | Personal telecommunications system The location independent personal telecommunications system of the present invention enables a subscriber to have a single personal telephone directory number. When that personal telephone number is dialed, the system uses the existing public and cellular... | 05/24/1994 |
| 5233643 | Method and system network for providing an area with limited bandwidth bi-direction burst personnel telecommunications A unique combination of frequency and time division multiplexed communications is presented to enable bi-directional burst communications between a substantial number of users over a single radio frequency communications channel. A service area for commun... | 08/03/1993 |
| 5086461 | Apparatus and method for providing existing 1ESS and 1AESS telephone switching equipment with the capability of using the SS7 protocol The invention relates to upgrading existing telephone central offices having 1ESS or 1AESS switching equipment to utilize the SS7 protocol. In particular, the 1ESS and 1AESS switching equipment is provided with the capability of controlling the connection... | 02/04/1992 |
| 4903263 | Apparatus and method for providing existing telephone switching equipment with integrated services digital network capability The invention relates to upgrading existing telephone central offices which utilize electromechanical or electronic switching equipment to include the capability of processing calls in the ISDN protocol. In particular, it relates to providing said switchi... | 02/20/1990 |
| 4853955 | Apparatus and method for providing existing telephone switching equipment with the capability of using the SS7 protocol The invention relates to upgrading existing telephone central offices which utilize electromechanical or electronic switching equipment incapable of using the SS7 protocol. In particular, it relates to providing the switching equipment with the capability... | 08/01/1989 |
| 4782519 | Method and apparatus for enhancing the operating capabilities of a telephone switching system A method and apparatus is described for providing extended subscriber features, e.g., equal access, to otherwise non-conforming central offices of a telephone switching system. According to the invention, a register module is interposed between the subscr... | 11/01/1988 |
