Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6650697 | Wireline communication system and method of frequency allocation therein | Leslie Derek Humphrey, Igor K Czajkowski | 2003-11-18 |
| 6647117 | Continuity of voice carried over DSL during power failure | Andrew D Wallace, Mark Bridger | 2003-11-11 |
| 6577650 | Method of setting-up and controlling synchronization within a modem | Leslie Derek Humphrey, Roger James Williamson, Igor K Czajkowski | 2003-06-10 |
| 6560225 | Enhanced performance VoDSL | Igor K Czajkowski, Leslie Derek Humphrey | 2003-05-06 |
| 6522691 | Method of and apparatus for determining the capacity of a telecommunications system | Roger James Williamson, Andrew D Wallace | 2003-02-18 |
| 6400803 | Voice over digital subscriber line call redirection for lifeline service | Jonathan Beattie, Roger James Williamson, Igor K Czajkowski, Mark Bridger | 2002-06-04 |
| 6353628 | Apparatus, method and system having reduced power consumption in a multi-carrier wireline environment | Andrew D Wallace, Mike Grant | 2002-03-05 |
| 6353636 | Symbol alignment method | Andrew D Wallace, Leslie Derek Humphrey | 2002-03-05 |
| 6272209 | Lifeline telephony provision for voice over digital subscriber line | Mark Bridger, Michael Grant, Roger James Williamson, Andrew D Wallace, Jeffrey G. Farrington | 2001-08-07 |
| 5959967 | Digital transmission system | Leslie Derek Humphrey | 1999-09-28 |