ADSL with RF POTS overlay

• US 6,424,661 B1
• Filed: 06/25/1998
• Issued: 07/23/2002
• Est. Priority Date: 06/25/1998
• Status: Expired due to Fees

• Current Assignee: Alcatel USA Sourcing L.P. (Nokia Corporation)
• Original Assignee: Alcatel USA Sourcing L.P. (Nokia Corporation)
• Inventors: Bentley, Ronald
• Primary Examiner(s): Vu, Huy D.
• Assistant Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US09/104,761
• Time in Patent Office: 1,489 Days
• Field of Search: 370/480, 370/481, 370/482, 370/485, 370/486, 370/487, 370/488, 370/489, 370/490, 370/493, 370/494, 370/495, 370/496, 370/497, 370/468, 370/476, 370/285, 370/538, 370/914, 370/399
• US Class Current: 370/482
• CPC Class Codes: H04M 11/06 Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13199 Modem, modulation
• CPC Class Codes: H04Q 2213/13209 ISDN

Abstract

A bidirectional telephony (POTS or ISDN) system utilizes RF technology to move the signalling away from the baseband frequency. The method translates baseband telephony signalling into one or more RF signals over twisted pair copper channels, in conjunction with an ADSL or VDSL signal on the same medium.

Claims

1. A telecommunications method comprising the steps of:

providing an ADSL signal on a twisted pair channel medium;

providing at least one RF subcarrier on the twisted pair channel medium for a POTS signal to enable the flow of high information rate content;

providing the ADSL signal with a frequency range; and

providing the at least one RF subcarrier for the POTS signal with a frequency greater than the ADSL signal frequency range.

2. The telecommunications method of claim 1 wherein said step of providing at least one RF subcarrier for a POTS signal comprises providing a first RF subcarrier for an upstream POTS signal and a second RF subcarrier for a downstream POTS signal.

3. The method of claim 1, wherein the twisted pair channel medium is a twisted pair copper channel medium.

4. The method of claim 1, wherein said step of providing the at least one RF subcarrier for the POTS signal includes providing one of an FM signal, an AM signal and a digital signal.

5. A method for bidirectional telephony having both POTS and ADSL signalling, said method comprising the steps of:

translating the POTS baseband telephony signalling into one or more RF signals; and

delivering said one or more RF signals over twisted pair channels with said ADSL signalling;

wherein said ADSL signalling has a frequency range, and the step of translating the POTS baseband telephony signalling comprises translating the signalling into one or more RF signals having a frequency greater than the ADSL signalling frequency range.

6. The method for bidirectional telephony of claim 5 wherein the step of translating the POTS baseband telephony signalling comprises translating the signalling into a first RF signal for upstream communication and a second RF signal for downstream communication.

7. The method of claim 5, wherein the twisted pair channels are twisted pair copper channels.

8. The method of claim 5, wherein said step of translating the POTS baseband telephony signalling includes translating the signalling into one of an FM signal, an AM signal and a digital signal.

9. A telecommunications method comprising the steps of:

providing an ADSL signal on a twisted pair channel medium; and

providing at least one RF subcarrier on the twisted pair channel medium for a POTS signal to enable the flow of high information rate content;

wherein said step of providing at least one RF subcarrier for a POTS signal comprises providing a narrow band fm signal.

10. The method of claim 9, wherein the twisted pair channel medium is a twisted pair copper channel medium.

11. A method for bidirectional telephony having both POTS and ADSL signalling, said method comprising the steps of:

translating the POTS baseband telephony signalling into one or more RF signals; and

delivering said one or more RF signals over twisted pair channels with said ADSL signaling;

wherein the step of translating the POTS baseband telephony signalling comprises translating the signalling into narrow band fm signals.

12. The method of claim 11, wherein the twisted pair channels are twisted pair copper channels.

13. A telecommunications apparatus, comprising:

a first portion for communication of an ADSL signal in a frequency range;

a second portion for communication of one of a POTS signal and an ISDN signal on an RF subcarrier having a frequency greater than the ADSL signal frequency range; and

a third portion coupled to said first and second portions for interfacing said first and second portions with a twisted pair channel medium capable of carrying the ADSL signal and the RF subcarrier.

14. The apparatus of claim 13, wherein said first and second portions respectively include first and second transmitters.

15. The apparatus of claim 14, wherein said first and second portions respectively include first and second receivers.

16. The apparatus of claim 13, wherein said first and second portions respectively include first and second receivers.

17. The apparatus of claim 13, wherein said third portion includes a combiner for combining the ADSL signal and the RF subcarrier on the twisted pair channel medium.

18. The apparatus of claim 13, wherein said third portion includes one of a duplexer and a diplexer.

19. The apparatus of claim 13, wherein the twisted pair channel medium is a twisted pair copper channel medium.

20. A telecommunications method comprising the steps of:

providing an ADSL signal on a twisted pair channel medium;

providing at least one RF subcarrier on the twisted pair channel medium for an ISDN signal to enable the flow of high information rate content;

providing the ADSL signal with a frequency range; and

providing the at least one RF subcarrier for the ISDN signal with a frequency greater than the ADSL signal frequency range.

21. The method of claim 20, wherein the twisted pair channel medium is a twisted pair copper channel medium.

22. The method of claim 20, wherein said step of providing the at least one RF subcarrier for the ISDN signal includes providing one of an FM signal, an AM signal and a digital signal.

23. A method for bidirectional telephony having both ISDN and ADSL signalling, said method comprising the steps of:

translating the ISDN baseband telephony signalling into one or more RF signals; and

delivering said one or more RF signals over twisted pair channels with said ADSL signalling;

wherein said ADSL signalling has a frequency range, and the step of translating the ISDN baseband telephony signalling comprises translating the signalling into one or more RF signals having a frequency greater than the ADSL signalling frequency range.

24. The method of claim 23, wherein the twisted pair channels are twisted pair copper channels.

25. The method of claim 23, wherein said step of translating the ISDN baseband telephony signalling includes translating the signalling into one of an FM signal, an AM signal and a digital signal.