Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480588 | Methods for providing prepaid telephony service via an internet protocol network system | — | 2002-11-12 |
| 6453034 | Method of and system for extending internet telephony over virtual private network direct access lines | Matthew Cannon | 2002-09-17 |
| 6453158 | Wireless prepaid platform integration with standard signaling | Kathleen A. McMurry, Raghavan Devanathan, John Kenneth Gallant | 2002-09-17 |
| 6434143 | Internet protocol telephony voice/video message deposit and retrieval | — | 2002-08-13 |
| 6366577 | Method for providing IP telephony with QoS using end-to-end RSVP signaling | — | 2002-04-02 |