Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7245607 | Apparatus and method for telephony feature access and gatekeeper policy interaction on combined ToL/PBX systems | Shmuel Shaffer, William J. Beyda | 2007-07-17 |
| 6456601 | Method and system to provide telephony tones and announcements in a packetized network environment | Peter Kozdon, Markku Korpi, Shmuel Shaffer | 2002-09-24 |
| 5991387 | Monitoring and controlling channels to improve the interface of calls | Shmuel Shaffer, William J. Beyda, Selena Dilley, Henry W. Lambert, Phillip C. Meredith | 1999-11-23 |