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US 2007/0071189 A1Published application
Broadband communications
AssigneeBritish Telecommunications plc
InventorsIan Henning, David Wake, Russell Davey
Life of this patent
Estimating the term…
Abstract
The present invention relates to a communications network, in particular to a communications network having a communications station such as a telephone exchange, and at least one interface, such as a cabinet. A plurality of optical carriers are provided between the exchange and a cabinet, thereby allowing modulation of the signals, for example xDSL modulation to be carried out at the exchange, rather than at the cabinet. This arrangement reduces the need to power the cabinet.
Claims15
A communications network comprising:
- a communications station;
- electrical transmission lines connecting the communications station to user terminations;
- data transmission means;
- optical carriers connecting the data transmission means to at least one interface, located between the communications station and user terminations, for converting optical signals from an optical carrier into electrical signals for transmission over one at least of the electrical transmission lines;
- wherein, for each of a plurality of user terminations requiring data service:
- (a) a dedicated one of said optical carriers is provided;
- (b) the data transmission means comprises modulation means for converting input data signals into output signals suitable for transmission over the electrical transmission lines, followed by means for modulating the output signals onto an optical signal;
- (c) the interface has optoelectrical conversion means arranged to recover said output signals and feed them to the electrical transmission line serving the relevant user termination.
5 more elements
A telecommunications network comprising:
- a telephone exchange;
- electrical transmission lines connecting the exchange to user terminations;
- data transmission means;
- optical transmission lines connecting the data transmission means to at least one interface, located between the exchange and user terminations, for converting optical signals from an optical transmission line into electrical signals for transmission over one of the electrical transmission lines;
- wherein, for each of a plurality of user terminations requiring data service:
- (a) a dedicated one of said optical transmission lines is provided;
- (b) the data transmission means comprises modulation means for converting input data signals into output signals suitable for transmission over the electrical transmission lines, followed by means for modulating the output signals onto an optical signal;
- (c) the interface has optoelectrical conversion means arranged to recover said output signals and feed them to the electrical transmission line serving the relevant user termination.
5 more elements
Dependencies are inferred from the claim text.