Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7801157 | Methods and systems for processing calls in a packet network using peer call servers | Xuewen Li, David P. Ress | 2010-09-21 |
| 6775277 | Methods and systems for processing calls in a packet network using peer call servers | Xuewen Li, David P. Ress | 2004-08-10 |