| 8547967 |
Method and apparatus for PSTN-based IP active call recovery and re-routing |
David Grabelsky |
2013-10-01 |
| 8539552 |
System and method for network based policy enforcement of intelligent-client features |
David Grabelsky, Anoop Tripathi, Guanglu Wang |
2013-09-17 |
| 8509225 |
IP-based enhanced emergency services using intelligent client devices |
David Grabelsky, Anoop Tripathi, Boby Joseph |
2013-08-13 |
| 8027333 |
IP-based enhanced emergency services using intelligent client devices |
David Grabelsky, Anoop Tripathi, Boby Joseph |
2011-09-27 |
| 7990955 |
Method and apparatus for PSTN-based IP active call recovery and re-routing |
David Grabelsky |
2011-08-02 |
| 7702726 |
System and methods for providing presence services in IP network |
David Grabelsky, Anoop Tripathi, Guanglu Wang |
2010-04-20 |
| 7613170 |
Method and apparatus for PSTN-based IP active call recovery and re-routing |
David Grabelsky |
2009-11-03 |
| 7564835 |
System and method for maximizing the use of bandwidth optimization techniques in voice-over-packet connections |
David Grabelsky, Anoop Tripathi, Boris Bekkerman |
2009-07-21 |
| 7480723 |
Method and system for providing directory based services |
David Grabelsky, Anoop Tripathi, Sudhakar Ramakrishna |
2009-01-20 |
| 7463620 |
Architecture and method for controlling features and services in packet-based networks |
Guanglu Wang, Anoop Tripathi |
2008-12-09 |
| 7460533 |
System and method for multi-casting announcements |
Anoop Tripathi |
2008-12-02 |
| 7440442 |
IP-based enhanced emergency services using intelligent client devices |
David Grabelsky, Anoop Tripathi, Boby Joseph |
2008-10-21 |
| 7298834 |
System and method for large capacity conference calls |
Guanglu Wang |
2007-11-20 |
| 7127487 |
System and method for sidebar functionality in a regular conference system |
Guanglu Wang |
2006-10-24 |
| 7069331 |
Trunk group implementation in networks |
Anoop Tripathi, Sudhakar Ramakrishna, Guanglu Wang |
2006-06-27 |
| 6785374 |
Method and apparatus for providing transaction capabilities application part information in a session initiation protocol system |
Guanglu Wang, Anoop Tripathi, David Grabelsky |
2004-08-31 |