Asymmetric digital subscriber line control system
US5461616A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An asymmetric digital subscriber line (ADSL) control system is adapted to transmit an audio signal and a control signal from at least one subscriber terminal to an exchange via a multiplexed line of an audio signal line, a control signal line and an image signal line, and to transmit an audio signal and an image signal from the exchange to the subscriber terminal. The ADSL control system includes a unit for allocating an unused image signal line between the subscriber terminal and the exchange to the control signal line from the subscriber terminal to the exchange, and a unit for allocating 2 lines for each subscriber terminal at the exchange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.