Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |