Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 2000 | Invention patented by Ralph F. Sweitzer, Dean E. Rasmussen, and Mickey C. Rushing on July 30th, 2000. Abstract: A DSL communication system including a DSL transmission unit at a central office (DTU-C) and a DSL transmission unit at a remote location (DTU-R) in communication over a communication link. DTU-C and DTU-R are capable of transmitting and receiving packets of data prior to synchronization or training. DTU-C transmits a discovery message to DTU-R and awaits receiving a discovery response message from DTU-R. After receiving the discovery response message, DTU-C transmits a probe message to DTU-R followed by a probe signal. DTU-R measures the line quality while receiving the probe signal. After receiving the probe signal, DTU-R transmits a probe signal to DTU-C, using which signal DTU-C measures the line quality. After transmitting the probe signal, DTU-R transmits a probe response message, including line quality measurements performed by DTU-R. DTU-C and DTU-R may negotiate a startup data rate by transmitting data rate messages based on the line quality measurements and/or based on other information that may be exchanged between DTU-C and DTU-R. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
