Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7907708 | Voice and fax over IP call establishment in a communications network | Dominic Walker | 2011-03-15 |
| 7876745 | Tandem free operation over packet networks | Mark Stewart, Dominic Walker | 2011-01-25 |