Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10979462 | Identifying voice over LTE users | Richard H. Xu | 2021-04-13 |
| 10979890 | Policy control framework | Richard H. Xu, Yixin Fan, Vitaliy G. Yurchenko | 2021-04-13 |
| 10911932 | Method and system for hub breakout roaming | Richard H. Xu, Ajay Joseph | 2021-02-02 |
| 10291661 | Method and system for call routing | Manpreet Singh, James W. Lotti | 2019-05-14 |
| 9788188 | Method and system for hub breakout roaming | Richard X. Xu, Ajay Joseph | 2017-10-10 |
| 9693219 | User profile conversion to support roaming | Richard H. Xu | 2017-06-27 |
| 9444738 | System and method for monitoring the volume of calls carried by a voice over internet protocol telephone system | Vitaliy G. Yurchenko | 2016-09-13 |
| 9392436 | Method and apparatus for voice over LTE | Richard H. Xu | 2016-07-12 |
| 8351421 | System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet | Ajay Joseph, Lizhong Zhang, Paul A. Skelly | 2013-01-08 |
| 8265062 | System and method for accomplishing special call treatment in a voice over internet protocol telephone system | Vitaliy G. Yurchenko | 2012-09-11 |
| 8248957 | System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet | Ajay Joseph, Lizhong Zhang, Paul A. Skelly | 2012-08-21 |
| 7577131 | System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet | Ajay Joseph, Lizhong Zhang, Paul A. Skelly | 2009-08-18 |
| 7529225 | System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet | Ajay Joseph, Lizhong Zhang, Paul A. Skelly | 2009-05-05 |