Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8230111 | Method for transmitting signaling messages using alternate path | — | 2012-07-24 |
| 7539177 | Call hold/terminal portability in H.323/ISUP-BICC-SIP networks | Klaus Hoffmann | 2009-05-26 |
| 7302495 | Method for transmitting signaling messages using alternate path | — | 2007-11-27 |
| 7274687 | Signaling method and arrangement | — | 2007-09-25 |