Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8023623 | Call control element constructing a session initiation protocol (SIP) message including provisions for incorporating address related information of public switched telephone network (PSTN) based devices | — | 2011-09-20 |
| 7508923 | Call control element constructing a session initiation protocol (SIP) message including provisions for incorporating address related information of public switched telephone network (PSTN) based devices | — | 2009-03-24 |