Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8051189 | Methods, systems, and computer program products for session initiation protocol (SIP) fast switchover | Phil Chiu | 2011-11-01 |
| 7616752 | Methods, systems, and computer program products for providing call waiting and caller ID and for toggling between active and waiting calls using session initiation protocol (SIP) | — | 2009-11-10 |