Terayon Communications Systems, Inc.

Jan Erreygers

Nicholas A Balatoni

Erwin De Bruycker

The present invention provides an effective way for Telecom operators to provide ADSL service to customers who are receiving POTS service over a pair gain system or who are connected to ISDN. According to one embodiment of the invention, an ADSLNDSL (Very High Speed DSL) splitter is integrated in the remote terminal of a pair gain system or in the NT,(Network Termination,) of an ISDN BA (Basic Access). Therefore, no extra box on the house and no extra truck roll is required when the customer orders ADSL service. Integrating the splitter makes the telephone line upwards compatible with UADSL since UADSL can be directly connected to an analog telephone line. According to another embodiment of the invention, both the splitter and ADSUUADSL modems are integrated in the remote terminal of a pair gain system or in the NT,of an ISDN BA. The splitter in the telephone company location may also be integrated in the central office terminal (COT) of the pair gain system. According to a further embodiment of the invention, the UADSL signal output of an ADSL splitter in the remote terminal of a pair gain system is connected to an analog POTS port, with appropriate filtering. According to this embodiment, the UADSL signal is connected to all POTS lines coming out of a remote terminal. Connecting the UADSL output of the splitter to the POTS output eliminates the need for additional wiring in the customers house.

Access network with an integrated splitter

A method and apparatus for converting an analog voice channel signal and a 4-wire digital signal into a single 2-wire digital signal which can be transferred over a single twisted pair line. In one aspect, the method comprises the steps of converting the analog voice channel signal into a first binary signal, converting the 4-wire digital signal into a second binary signal, combining the first binary signal and the second binary signal into a higher rate binary signal, and converting the higher rate binary signal into a 2-wire digital signal which can be transmitted to another location over a single twisted pair line. In another aspect, the method comprises the steps of converting a 2-wire digital signal to a higher rate binary signal, separating a first binary signal and a second binary signal from the higher rate binary signal and converting the first binary signal into an analog voice channel signal, and converting the second binary signal into a 4-wire digital signal. The apparatus includes an easily installed voice plus digital data remote terminal and voice plus digital data central office terminal. The apparatus can provide a 3-to-1 pair gain by multiplexing signals representing the analog voice telephone signals and 4-wire digital data signals.

Voice and data communications

The present invention provides an efficient way to implement ADSL over long distances by combining a repeater for ADSL with a pair gain system, whereby the pair gain system remotely provides DC power to the repeater over the same pair as that for transmission of DSL and ADSL signals. The invention allows telecom operators to save huge costs in implementing ADSL over long distances, without sacrificing the quality of signal transmission. According to an embodiment of the invention, a telecommunication system comprises a central office system, a customer premise system and a repeater unit. The central office system provides and receives digital subscriber line (DSL) and asymmetrical DSL (ADSL) signals over a first pair of wires. The central office system also provides DC power to the repeater unit via the first pair. The customer premise system receives and sends DSL and ADSL signals over a second pair of wires. The repeater unit is coupled between the first and second pairs of wires for receiving an ADSL signal from the central office system via the first pair and providing a repeated ADSL signal to the customer premise system via the second pair. The repeater unit also receives an ADSL signal from the customer premise system via the second pair and provides a repeated ADSL signal to the central office system via the first pair.

Growing community of inventors

Tielt-Winge, Belgium

Jan Erreygers