| 7821940 |
Transmission of maintenance information of an active packet connection through employment of packets communicated over the active packet connection |
Douglas Botkin, Mark G. Bradac, Edward Clark, Steven Makowski, Alan H. Matten +2 more |
2010-10-26 |
| 7653068 |
Method and apparatus for providing call admission control in packet networks |
Douglas Botkin, Steven Makowski, Marc Blumberg, Mark G. Bradac, Edward Clark +6 more |
2010-01-26 |
| 7639664 |
Dynamic management of trunk group members |
Edward Clark, Peter Tomasino |
2009-12-29 |
| 7535850 |
Method and apparatus for providing voice path assurance testing through a packet network |
Steven Makowski, Douglas Botkin |
2009-05-19 |
| 7236484 |
Methods and systems for providing wide-band voice service via a telephone switch system |
Carl Robert Posthuma |
2007-06-26 |
| 6810120 |
Method of determining answer supervision at a line appearance of a public switch telephone network |
Michael J. Elder, Raymond L. Ruggerio, Jane Ann Thompson, Robin Jeffrey Thompson, Kimberly Sue Tomasko-Dean |
2004-10-26 |
| 6724780 |
Voice frequency data enhancement method |
Arupjyoti Bhuyan, Gerald R. Boyer, Ronald R. Brown, Eric A. Deichstetter, Jeffrey Louis Duffany +7 more |
2004-04-20 |
| 6154469 |
Voice frequency data enhancement method |
Gerald R. Boyer, Ronald R. Brown, Eric A. Deichstetter, Jeffrey Louis Duffany, Phillip C. Goelz +3 more |
2000-11-28 |
