| 9246879 |
Methods and apparatus to form secure cross-virtual private network communication sessions |
Mark Elias |
2016-01-26 |
| 9154336 |
Methods and apparatus to implement voice over internet protocol (VoIP) phones |
Mark Elias |
2015-10-06 |
| 9100237 |
VoIP 911 address locator service |
— |
2015-08-04 |
| 8879543 |
Methods and apparatus to form secure cross-virtual private network communication sessions |
Mark Elias |
2014-11-04 |
| 8391276 |
Methods and apparatus to form secure cross-virtual private network communications sessions |
Mark Elias |
2013-03-05 |
| 8279850 |
Methods and apparatus to implement voice over internet protocol (VoIP) phones |
Mark Elias |
2012-10-02 |
| 8107462 |
System and method of routing telephone calls |
— |
2012-01-31 |
| 7664251 |
Abbreviated dialing between PBX and Centrex systems using a VoIP platform |
— |
2010-02-16 |
| 7406158 |
Method and system for playing packetized announcements to telephone network end office switching systems from a centralized digital recorded announcement unit |
Sidney L. Underwood |
2008-07-29 |
| 7356023 |
System and method for facilitating packetized calls between managed networks |
— |
2008-04-08 |
| 7260089 |
Remote worker access on networked PBX systems using a VoIP platform |
— |
2007-08-21 |