Hybrid fiber twisted pair local loop network service architecture

• US 6,359,881 B1
• Filed: 12/31/1997
• Issued: 03/19/2002
• Est. Priority Date: 12/31/1997
• Status: Expired due to Term

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Russell, Jesse Eugene, Treventi, Philip Andrew, Gerszberg, Irwin, Miller, II, Robert Raymond, Romain, Dennis Matthew
• Primary Examiner(s): YAO, KWANG BIN
• Application Number:
  US09/001,360
• Time in Patent Office: 1,539 Days
• Field of Search: 370/352, 370/353, 370/354, 370/355, 370/356, 370/357, 370/360, 370/419, 370/420, 370/421, 370/463, 370/493, 370/494, 370/495, 370/529, 370/401, 370/403, 370/404, 370/405, 370/408, 370/536, 370/537, 370/538, 370/539, 370/542, 370/543, 379/93.09, 379/219, 379/220, 379/224
• US Class Current: 370/354
• CPC Class Codes: H04L 2012/5605 Fibre
• CPC Class Codes: H04L 2012/5606 Metallic
• CPC Class Codes: H04L 2012/561 Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
• CPC Class Codes: H04L 2012/5615 Network termination, e.g. NT1, NT2, PBX
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5632 Bandwidth allocation
• CPC Class Codes: H04L 2012/5639 Tariffs or charging
• CPC Class Codes: H04L 2012/5667 IP over ATM
• CPC Class Codes: H04Q 11/0421 Circuit arrangements therefor
• CPC Class Codes: H04Q 2213/13012 Hybrid fiber coax, HFC
• CPC Class Codes: H04Q 2213/13031 Pulse code modulation, PCM
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13093 Personal computer, PC
• CPC Class Codes: H04Q 2213/13096 Digital apparatus individually associated with a subscriber line, digital line circuits
• CPC Class Codes: H04Q 2213/13103 Memory
• CPC Class Codes: H04Q 2213/13141 Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13175 Graphical user interface [GUI], WWW interface, visual indication
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13196 Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/13199 Modem, modulation
• CPC Class Codes: H04Q 2213/13204 : Protocols
• CPC Class Codes: H04Q 2213/13209 : ISDN
• CPC Class Codes: H04Q 2213/13248 : Multimedia
• CPC Class Codes: H04Q 2213/1326 : Consultation call, broker's call, call hold, toggling
• CPC Class Codes: H04Q 2213/1329 : Asynchronous transfer mode, ATM
• CPC Class Codes: H04Q 2213/13292 : Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/13298 : Local loop systems, access network
• CPC Class Codes: H04Q 2213/13299 : Bus
• CPC Class Codes: H04Q 2213/13331 : Abbreviated dialling
• CPC Class Codes: H04Q 2213/13337 : Picturephone, videotelephony
• CPC Class Codes: H04Q 2213/13349 : Network management
• CPC Class Codes: H04Q 2213/13367 : Hierarchical multiplexing, add-drop multiplexing
• CPC Class Codes: H04Q 2213/13389 : LAN, internet
• CPC Class Codes: H04Q 2213/13405 : Dual frequency signaling, DTMF
• CPC Class Codes: H04Q 3/0016 : Arrangements providing connection between exchanges

Abstract

A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting. The architecture provides for fault-tolerant, transparent interaction of components and services and supports a variety of standards for each level of the open systems interconnection layers and layers of TCP/IP. The FMP connects electronically or optically to the public switched telephone network, Internet backbone, a private Intranet as well as other possible network connections.

Claims

1. A communications architecture comprising:

at least one customer premises equipment interface device coupled to a digital subscriber line modem, the interface device being connected to one end of a single twisted cable pair,

a facilities management platform capable of separating voice signals from data packet signals and connected to another end of said single twisted cable pair, the facilities management platform for interfacing with a plurality of different networks including a packet data network via a digital optical ring network,

a router within the facilities management platform for transmitting data packet signals received from customer premises equipment to a packet data communications network simultaneously with transmitting voice signals received from customer premises equipment to a public switched telephone network,

a digital loop carrier within the facilities management platform capable of transmitting the voice signals to the public switched telephone network and receiving voice signals from the public switched telephone network; and

a network server platform coupled to said facilities management platform via said digital optical ring network for providing system management to the facilities management platform.

2. The communications architecture of claim 1 wherein said at least one customer premises equipment device comprises a multiplexer for multiplexing voice and data signals for simultaneous transmission over said single twisted cable pair to said facilities management platform.

3. The communications architecture of claim 2, wherein the multiplexed voice and data signals are transmitted and received by the customer premises equipment interface device by a spread spectrum multiplexing scheme.

4. The communications architecture of claim 2, wherein the multiplexed voice and data signals are transmitted and received by the customer premises equipment interface device by a time division multiplexing scheme.

5. The communications architecture of claim 2, wherein the multiplexed voice and data signals are transmitted and received by the customer premises equipment interface device by a frequency division multiplexing scheme.

6. The communications architecture of claim 2, wherein the multiplexed voice and data signals are transmitted and received by the customer premises equipment interface device by an asynchronous multiplexing scheme.

7. The communications architecture of claim 2, wherein the multiplexed voice and data signals are transmitted and received by the customer premises equipment interface device by a synchronous multiplexing scheme.

8. The communications architecture of claim 1, the customer premises equipment interface being electronically connected to the facilities management platform by digital subscriber line modems including said digital subscriber line modem of said customer premises interface device.

9. The communications architecture of claim 1 wherein said digital optical ring network comprises a synchronous optical network.

10. The communications architecture of claim 1 further comprising at least one analog telephone connected to the customer premises interface device.

11. The communications architecture of claim 1 further comprising at least one digital telephone connected to the customer premises interface device.

12. The communications architecture of claim 1 further comprising at least one video telephone connected to the customer premises interface device.

13. The communications architecture of claim 1 further comprising at least one facsimile machine connected to the customer premises interface device.

14. The communications architecture of claim 1 further comprising at least one personal computer telephone connected to the customer premises interface device.

15. The communication architecture of claim 1, wherein the facilities management platform further comprises:

at least one line card; and

means for directly routing analog voice signals to the at least one line card.

16. The communication architecture of claim 15, wherein the at least one line card is configured to convert the analog voice signals to digital format for transmission over a network.

17. The communication architecture of claim 1, wherein the router is configured to transmit the data packet signals and the voice signals over a high speed backbone network.

18. A communications architecture comprising:

at least one customer premises equipment interface device coupled to a digital subscriber line modem, the interface device being connected to one end of a single twisted cable pair, and being capable of multiplexing and demultiplexing signals,

a main distributing frame connected to another end of said single twisted cable pair for terminating a plurality of twisted cable pairs, the main distributing frame providing cross connection between said customer premises interface device and a facilities management platform,

the facilities management platform capable of separating voice signals from data packet signals and connected to the other end of said single twisted cable pair via said main distributing frame, the facilities management platform for interfacing with a plurality of different networks including a packet data network and a public switched telephone network via a digital optical ring network,

a router within the facilities management platform for transmitting data packet signals received from customer premises equipment to a packet data communications network simultaneously with transmitting voice signals received from customer premises equipment to said public switched telephone network,

a digital loop carrier within the facilities management platform capable of transmitting the voice signals to the public switched telephone network and receiving voice signals from the public switched telephone network; and

a network server platform coupled to said facilities management platform via said digital optical ring network for providing system management to the facilities management platform.

19. The communications architecture of claim 18 wherein the public switched telephone network comprises an out of band signaling network.

20. The communications architecture of claim 18, the network server platform for further launching network applications for use by other elements of said architecture.

21. The communications architecture of claim 18 wherein the plurality of different networks further comprises a private switched telephone network.

22. The communications network architecture of claim 18 wherein said facilities management platform comprises an element of an interexchange carrier.

23. The communication architecture of claim 18, wherein the facilities management platform further comprises:

at least one line card; and

means for directly routing analog voice signals to the at least one line card.

24. The communication architecture of claim 23, wherein the at least one line card is configured to convert the analog voice signals to digital format.

25. The communication architecture of claim 18, wherein the router is configured to transmit the data packet signals and the voice signals over a high speed backbone network.

26. In a communication architecture comprising at least one customer premises equipment interface device coupled to a digital subscriber line modem, the interface device being connected to one end of a single twisted cable pair, a facilities management platform capable of separating voice signals from data packet signals and connected to another end of said single twisted cable pair, the facilities management platform for interfacing with a plurality of different networks including a packet data network via a digital optical ring network, a router within the facilities management platform for transmitting data packet signals received from customer premises equipment to a packet data communications network simultaneously with transmitting voice signals received from customer premises equipment to a public switched telephone network, and a network server platform coupled to said facilities management platform via said digital optical ring network for providing system management to the facilities management platform, a method of providing simultaneous communications over said single twisted cable pair comprising the steps of

receiving a request for one of a voice or packet data service over said single twisted cable pair at one of said facilities management platform or said customer premises interface device,

permitting said one service over said single twisted cable pair,

receiving a second request for one of a voice or packet data service over said single twisted cable pair at one of said facilities management platform or said customer premises interface device and

multiplexing signals associated with said first and second services over said single twisted cable pair resulting in both said services being received simultaneously by at least one user of said architecture, said signals being intelligently multiplexed such that an available bandwidth of said single twisted pair is maximized.

27. A method as recited in claim 26 wherein said services comprise a voice service and a packet data service permitting a user to speak to another party and view an Internet web page on a personal computer display at the same time.

28. A method as recited in claim 26 further comprising the steps of receiving a third request for service over said single twisted cable pair and multiplexing signals associated with said first, second and third services over said single twisted cable pair resulting in said service being received simultaneously by at least one user of said architecture.

29. A method as recited in claim 26 wherein said first request for service comprises a request for an Internet packet data service and said second request for service comprises a request for a video service.

30. The method of claim 26, further comprising:

directly routing analog voice signals to at least one line card within the facilities management platform for transmission over a network when a digital data link fails.

31. The method of claim 30, further comprising:

converting, by the at least one line card, of analog voice signals to digital format for transmission over the network.

32. The method of claim 26, further comprising:

transmitting, via the router, the data packet signals and the voice signals over a high speed backbone network.