Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8442037 | System and method for device registration replication in a communication network | Christopher E. Pearce | 2013-05-14 |
| 8254552 | System and method for providing a recovery mode in a session initiation protocol (SIP) environment | David Harton, Richard A. Frisk, Ho Bao | 2012-08-28 |
| 8199898 | System and method for routing calls across call managers using a route plan | Roger V. Beathard | 2012-06-12 |
| 7733845 | System and method for device registration replication in a communication network | Christopher E. Pearce | 2010-06-08 |
| 7412051 | System and method for routing calls across call managers using a route plan | Roger V. Beathard | 2008-08-12 |