Facilitating digital subscriber line services via a subscriber premise network interface device

• US 7,274,669 B2
• Filed: 04/25/2002
• Issued: 09/25/2007
• Est. Priority Date: 04/25/2002
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Sharpe, Randall B., Rzonca, Richard R., Czerwiec, Richard M., Sutherland, Joseph E., Sanders, Gus C. Jr., Bailey, Richard H.
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US10/132,806
• Publication Number:
  US 20030204393A1
• Time in Patent Office: 1,979 Days
• Field of Search: None
• US Class Current: 370/241
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data
• CPC Class Codes: H04M 2207/203 composed of PSTN and data network, e.g. the Internet
• CPC Class Codes: H04M 3/2209 for lines also used for data transmission
• CPC Class Codes: H04M 3/30 for subscriber's lines , for the local loop

Abstract

Various aspects of apparatuses and methods for enabling a subscriber premise network interface device (NID) to facilitate communication services including digitally derived voice services to be facilitated between a central office and a subscriber premise are disclosed herein. In accordance with one embodiment of the disclosures herein, such a method includes facilitating a downstream DSL voice channel transmission process at a subscriber premise Network Interface Device (NID) and facilitating an upstream DSL voice channel transmission process at the subscriber premise NID. The downstream DSL voice channel transmission process facilitates converting a voice component of a downstream DSL data stream to a corresponding downstream analog voice signal. The upstream DSL voice channel transmission process facilitates converting an upstream analog voice signal to an upstream voice component of an upstream DSL data stream.

Claims

1. A subscriber premise Network Interface Device (NID), comprising:

a Digital Subscriber Line (DSL) data stream processing circuit enabling reception of voice signal downstream transmission units, wherein said voice signal downstream transmission units are received in accordance with a DSL protocol;

a transmission unit processing circuit enabling channel identifier assessment of said voice signal downstream transmission units and facilitating reassembly of voice signal content of said voice signal downstream transmission units;

a voice signal conversion circuit enabling conversion of said voice signal downstream transmission units to a corresponding downstream analog voice signal; and

a test circuit enabling functional operability evaluation of service provider facility paired conductors including automatically terminating at least one pair of said service provider facility paired conductors in response to an NID supply voltage being removed from said at least one pair of service provider facility paired conductors.

2. The subscriber premise NID of claim 1 wherein the transmission unit processing circuit is connected between the DSL data stream processing circuit and the voice signal conversion circuit.

3. The subscriber premise NID of claim 1 wherein:

each one of said voice signal downstream transmission units includes a virtual channel identifier; and

the transmission unit processing circuit includes circuitry for determining virtual channel identifiers, thus enabling channel identifier assessment of said voice signal downstream transmission units.

4. The subscriber premise NID of claim 1 wherein the transmission unit processing circuit is further capable of removing data transport protocol overhead from said voice signal downstream transmission units.

5. The subscriber premise NID of claim 4 wherein:

each one of said voice signal downstream transmission units is received by the transmission unit processing circuit as an Asynchronous Transfer Mode (ATM) cell; and

said data transport protocol overhead is ATM overhead.

6. The subscriber premise NID of claim 1 wherein the transmission unit processing circuit is further capable of removing data transport protocol overhead and data transport protocol headers from said voice signal downstream transmission units.

7. The subscriber premise NID of claim 6 wherein:

each one of said voice signal downstream transmission units is received by the transmission unit processing circuit as an Asynchronous Transfer Mode (ATM) cell; and

said data transport protocol overhead is ATM overhead and said data transport protocol headers are ATM headers.

8. The subscriber premise NID of claim 1 wherein:

each one of said voice signal downstream transmission units is received at the transmission unit processing circuit as an Asynchronous Transfer Mode cell; and

enabling reassembly of voice signal content of said voice signal downstream transmission units includes reassembling a plurality of said voice signal downstream transmission units into a corresponding Internet Protocol packet.

9. The subscriber premise NID of claim 1 wherein:

each one of said voice signal downstream transmission units received by the transmission unit processing circuit is a transmission unit configured according to a first data transport protocol; and

enabling reassembly of said voice signal downstream transmission units includes combining contents of a plurality of said transmission units configured according to the first data transport protocol into a corresponding transmission unit configured according to a second data transport protocol.

10. The subscriber premise NID of claim 1 wherein the transmission unit processing circuit includes a voice digital signal processor.

11. The subscriber premise NID of claim 1 wherein voice signal conversion circuit is connected between the transmission unit processing circuit and a plurality of subscriber interface ports.

12. The subscriber premise NID of claim 1 wherein the voice signal conversion circuit is capable of enabling a transmission unit-to-analog conversion operation and enabling an analog-to-transmission unit conversion operation.

13. The subscriber premise NID of claim 12 wherein:

said voice signal downstream transmission units are received by the voice signal conversion circuit as Internet Protocol (IP) packets; and

the voice signal conversion circuit converts said IP packets to the corresponding downstream analog voice signal.

14. The subscriber premise NID of claim 1 wherein the voice signal conversion circuit includes digital encode-decode circuitry.

15. The subscriber premise NID of claim 14 wherein the voice signal conversion circuit includes a voice digital signal processor.

16. The subscriber premise NID of claim 1 wherein enabling said functional operability includes terminating at least one pair of said service provider facility paired conductors.

17. The subscriber premise NID of claim 1 wherein terminating said at least one pair of service provider facility paired conductors is performed after an NID supply voltage is removed from said at least one pair of service provider facility paired conductors.

18. The subscriber premise NID of claim 1, further comprising a voltage control circuit capable of automatically coordinating removal of a NID supply voltage upon initiation of said functional operability evaluation of service provider facility paired conductors.

19. The subscriber premise NID of claim 1, further comprising:

a test circuit capable of enabling functional operability evaluation of a subscriber premise transmission facility.

20. The subscriber premise NID of claim 19 wherein enabling said functional operability evaluation includes enabling testing of paired conductors of the subscriber premise transmission facility.

21. The subscriber premise NID of claim 20 wherein enabling functional operability evaluation of said subscriber premise facility paired conductors includes implementing at least a portion of a subscriber premise transmission facility test sequence.

22. The subscriber premise NID of claim 21 wherein:

the test circuit facilitates transmission of at least one upstream transmission unit conveying test results after the subscriber premise transmission facility test sequence is performed; and

said at least one upstream transmission unit is transmitted for reception by a central office voice gateway.

23. The subscriber premise NID of claim 1, further comprising:

a test circuit capable of enabling functional operability evaluation of NID circuitry.

24. The subscriber premise NID of claim 23 wherein enabling functional operability evaluation of said NID circuitry includes responding to test conditions governed by a Pair Gain Test Controller.

25. The subscriber premise NID of claim 23 wherein enabling functional operability evaluation of said NID circuitry includes testing functional operability of NID Subscriber Line Interface Circuitry (SLIC) associated with at least one subscriber interface port.

26. The subscriber premise NID of claim 1 wherein:

the voice signal conversion circuit is further capable of enabling conversion of an upstream analog voice signal to corresponding voice signal upstream transmission units;

the transmission unit processing circuit is further capable of enabling channel identifier association for said voice signal upstream transmission units; and

the DSL data stream processing circuit is further capable of enabling transmission of said voice signal upstream transmission units, wherein said voice signal upstream transmission units are transmitted in accordance with the DSL protocol.

27. The subscriber premise NID of claim 26 wherein the voice signal conversion circuit is further capable of enabling subscriber interface identifier association for associating at least one subscriber interface identifier with each one of said voice signal upstream transmission units.

28. The subscriber premise NID of claim 26 wherein enabling channel identifier association includes associating a channel identifier with each one of said voice signal upstream transmission units.

29. The subscriber premise NID of claim 26 wherein the channel identifier associated with each one of said voice signal upstream transmission units is a virtual channel identifier.

30. A subscriber premise Network Interface Device (NID), comprising:

means for enabling reception of a downstream DSL data stream including voice signal downstream transmission units;

means for enabling channel identifier assessment for identifying said voice signal downstream transmission units;

means for enabling analog conversion of said voice signal downstream transmission units, wherein said voice signal downstream transmission units are converted to a corresponding downstream analog voice signal; and

means for enabling functional operability evaluation of service provider facility paired conductors including terminating at least one pair of said service provider facility paired conductors after an NID supply voltage is removed from said at least one pair of service provider facility paired conductors.

31. The subscriber premise NID of claim 30 wherein:

each one of said voice signal downstream transmission units includes a virtual channel identifier; and

said means for enabling channel identifier assessment is capable of determining virtual channel identifiers, thus enabling channel identifier assessment of said voice signal downstream transmission units.

32. The subscriber premise NID of claim 30, further comprising:

means for enabling removal of data transport protocol overhead from said voice signal downstream transmission units.

33. The subscriber premise NID of claim 32 wherein:

each one of said voice signal downstream transmission units is received by said means for enabling removal of data transport protocol overhead as an Asynchronous Transfer Mode (ATM) cell; and

said data transport protocol overhead is ATM overhead.

34. The subscriber premise NID of claim 30, further comprising:

means for enabling removal of data transport protocol overhead and data transport protocol headers from said voice signal downstream transmission units.

35. The subscriber premise NID of claim 30, further comprising:

means for reassembling voice signal content of said voice signal downstream transmission units, wherein each one of said voice signal downstream transmission units is received at said means for reassembling as an Asynchronous Transfer Mode cell, and wherein said means for reassembly facilitates reassembling a plurality of said voice signal downstream transmission units into a corresponding Internet Protocol packet.

36. The subscriber premise NID of claim 30, further comprising:

means for reassembling voice signal content of said voice signal downstream transmission units, wherein each one of said voice signal downstream transmission units is received at said means for reassembling as a transmission unit configured according to a first data transport protocol and wherein said means for reassembly facilitates reassembling voice signal content of a plurality of said voice signal downstream transmission units into a corresponding voice signal downstream transmission unit configured according to a second data transport protocol.

37. The subscriber premise NID of claim 30 wherein said means for enabling analog conversion performs a transmission unit-to-analog conversion operation for converting said voice signal downstream transmission units to the corresponding downstream analog voice signal.

38. The subscriber premise NID of claim 37 wherein:

said voice signal downstream transmission units are received by said means for enabling analog conversion as Internet Protocol (IP) packets; and

said means for enabling analog conversion converts said IP packets to the corresponding downstream analog voice signal.

39. The subscriber premise NID of claim 30, further comprising:

means for automatically coordinating removal of a NID supply voltage upon initiation of said functional operability evaluation of service provider facility paired conductors.

40. The subscriber premise NID of claim 30 wherein enabling said functional operability evaluation of said service provider facility paired conductors includes automatically terminating at least one pair of said service provider facility paired conductors in response to an NID supply voltage being removed from said at least one pair of service provider facility paired conductors.

41. The subscriber premise NID of claim 30, further comprising:

means for enabling functional operability evaluation of a subscriber premise transmission facility.

42. The subscriber premise NID of claim 41 wherein enabling said functional operability evaluation includes facilitating testing of paired conductors of the subscriber premise transmission facility.

43. The subscriber premise NID of claim 42 wherein enabling functional operability evaluation of said subscriber premise facility paired conductors includes implementing at least a portion of a subscriber premise transmission facility test sequence.

44. The subscriber premise NID of claim 43 wherein the test circuit transmits a message conveying test results for reception by a central office voice gateway after the subscriber premise transmission facility test sequence is performed.

45. The subscriber premise NID of claim 30, further comprising:

means for enabling functional operability evaluation of NID circuitry.

46. The subscriber premise NID of claim 45 wherein enabling functional operability evaluation of said NID circuitry includes responding to test conditions governed by a Pair Gain Test Controller.

47. The subscriber premise NID of claim 45 wherein enabling functional operability evaluation of said NID circuitry includes testing functional operability of NID Subscriber Line Interface Circuitry (SLIC) associated with at least one subscriber interface port.

48. The subscriber premise NID of claim 30, further comprising:

means for converting an upstream analog voice signal to corresponding voice signal upstream transmission units;

means for associating a channel identifier to each one of said voice signal upstream transmission units

means for transmitting said voice signal upstream transmission units, wherein said voice signal upstream transmission units are transmitted in accordance with the DSL protocol.

49. The subscriber premise NID of claim 48, further comprising:

means for associating a subscriber interface identifier to each one of said voice signal upstream transmission units.

50. A subscriber premise Network Interface Device (NID), comprising:

a Digital Subscriber Line (DSL) data stream processing circuit enabling reception of voice signal downstream transmission units, wherein said voice signal downstream transmission units are received in accordance with a DSL protocol;

a transmission unit processing circuit enabling channel identifier assessment of said voice signal downstream transmission units and facilitating reassembly of voice signal content of said voice signal downstream transmission units;

a voice signal conversion circuit enabling conversion of said voice signal downstream transmission units to a corresponding downstream analog voice signal;

a first test circuit capable of terminating at least one pair of said service provider facility paired conductors for facilitating functional operability evaluation of service provider facility paired conductors;

a second test circuit enabling functional operability evaluation of a subscriber premise transmission facility, wherein the second test circuit transmits a message conveying test results for reception by a central office voice gateway after a subscriber premise transmission facility test sequence is performed; and

a third test circuit capable of responding to test conditions governed by a Pair Gain Test Controller for enabling functional operability evaluation of NID circuitry.

51. A subscriber premise Network Interface Device (NID), comprising:

means for enabling reception of a downstream DSL data stream including voice signal downstream transmission units;

means for enabling channel identifier assessment for identifying said voice signal downstream transmission units;

means for enabling analog conversion of said voice signal downstream transmission units, wherein said voice signal downstream transmission units are converted to a corresponding downstream analog voice signal;

means for enabling removal of at least one of data transport protocol overhead and data transport protocol headers from said voice signal downstream transmission units;

means for reassembling voice signal content of said voice signal downstream transmission units, wherein each one of said voice signal downstream transmission units is received at said means for reassembling as a transmission unit configured according to a first data transport protocol;

means for enabling functional operability evaluation of service provider facility paired conductors;

means for enabling functional operability evaluation of a subscriber premise transmission facility; and

means for enabling functional operability evaluation of NID circuitry.

52. The subscriber premise NID of claim 51, further comprising:

means for convening an upstream analog voice signal to corresponding voice signal upstream transmission units;

means for associating a channel identifier to each one of said voice signal upstream transmission units; and

means for transmitting said voice signal upstream transmission units, wherein said voice signal upstream transmission units are transmitted in accordance with the DSL protocol.