Broadband telecommunications system

• US 5,991,301 A
• Filed: 09/08/1995
• Issued: 11/23/1999
• Est. Priority Date: 05/05/1994
• Status: Expired due to Term

• Current Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Christie, Joseph Michael
• Primary Examiner(s): Patel, Ajit
• Application Number:
  US08/525,897
• Time in Patent Office: 1,537 Days
• Field of Search: 370/17, 370/24, 370/58.2, 370/68.1, 370/110.1, 370/60, 370/60.1, 370/94.1, 370/94.2, 370/79, 370/84, 370/85.13, 370/351, 370/352-360, 370/395, 370/396, 370/397 , 370/398, 370/399, 370/465, 370/466, 370/467, 370/410, 370/389, 379/220, 379/229, 379/230
• US Class Current: 370/395.3
• CPC Class Codes: H04J 3/125 One of the channel pulses or the synchronisation pulse is also used for transmitting monitoring or supervisory signals
• CPC Class Codes: H04J 3/247 ATM or packet multiplexing
• CPC Class Codes: H04L 2012/561 Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5653 using the ATM adaptation layer [AAL]
• CPC Class Codes: H04L 2012/5665 Interaction of ATM with other protocols
• CPC Class Codes: H04L 2012/5672 Multiplexing, e.g. coding, scrambling
• CPC Class Codes: H04L 2101/64 Asynchronous transfer mode [ATM] addresses
• CPC Class Codes: H04L 2101/65 Telephone numbers
• CPC Class Codes: H04L 49/206 Real Time traffic
• CPC Class Codes: H04L 49/251 Cut-through or wormhole routing
• CPC Class Codes: H04L 49/253 using establishment or release of connections between ports
• CPC Class Codes: H04L 49/254 Centralised controller, i.e. arbitration or scheduling
• CPC Class Codes: H04L 49/255 Control mechanisms for ATM switching fabrics
• CPC Class Codes: H04L 49/256 Routing or path finding in ATM switching fabrics
• CPC Class Codes: H04L 49/3009 Header conversion, routing tables or routing tags
• CPC Class Codes: H04L 49/50 Overload detection or protection within a single switching element
• CPC Class Codes: H04L 61/10 of different types
• CPC Class Codes: H04L 61/106 across networks, e.g. mapping telephone numbers to data network addresses
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04Q 11/0478 : Provisions for broadband connections
• CPC Class Codes: H04Q 2213/13102 : Common translator
• CPC Class Codes: H04Q 2213/13104 : Central control, computer control
• CPC Class Codes: H04Q 2213/13141 : Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13167 : Redundant apparatus
• CPC Class Codes: H04Q 2213/13176 : Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13204 : Protocols
• CPC Class Codes: H04Q 2213/13209 : ISDN
• CPC Class Codes: H04Q 2213/1329 : Asynchronous transfer mode, ATM
• CPC Class Codes: H04Q 2213/13296 : Packet switching, X.25, frame relay
• CPC Class Codes: H04Q 2213/13349 : Network management
• CPC Class Codes: H04Q 2213/1338 : Inter-exchange connection
• CPC Class Codes: H04Q 2213/13389 : LAN, internet
• CPC Class Codes: H04Q 2213/13399 : Virtual channel/circuits
• CPC Class Codes: H04Q 2213/13527 : protocols - X.25, TCAP etc.
• CPC Class Codes: H04Q 3/0016 : Arrangements providing connection between exchanges
• CPC Class Codes: H04Q 3/0025 : Provisions for signalling
• CPC Class Codes: H04Q 3/0029 : Provisions for intelligent networking

Abstract

The invention is a system for providing virtual connections through an ATM interworking multiplexer on a call-by-call basis. A signaling processor receives signaling for a call and selects the virtual connection for the call. The signaling processor generates new signaling that identifies the selection and transfers the new signaling to the ATM interworking multiplexer that accepted the access connection for the call. The multiplexer converts user information from the access connection into ATM cells for transmission over the virtual connection in accord with the new signaling.

Claims

1. A method of operating a telecommunications system to provide a call with a virtual connection wherein a user places the call by sending signaling for the call to the telecommunications system and by transmitting user information to the telecommunications system over a particular connection for the call, wherein the system comprises an ATM interworking multiplexer and a signaling processor linked to the ATM interworking multiplexer, the method comprising:

receiving the signaling for the call into the signaling processor;

processing the signaling for the call in the signaling processor to select the virtual connection;

generating new signaling in the signaling processor to identify the particular connection and the selected virtual connection;

transmitting the new signaling to the ATM interworking multiplexer;

receiving the user information for the call from the particular connection into the ATM interworking multiplexer;

converting the user information from the particular connection into ATM cells that identify the selected virtual connection in the ATM interworking multiplexer in response to the new signaling; and

transmitting the ATM cells from the ATM interworking multiplexer over the selected virtual connection.

2. The method of claim 1 wherein receiving the signaling for the call comprises receiving a call set-up message.

3. The method of claim 1 wherein receiving the signaling for the call comprises receiving a Signaling System #7 (SS7) initial address message (IAM).

4. The method of claim 1 wherein receiving user information for the call from the particular connection comprises receiving user information from a DS0 connection.

5. The method of claim 1 wherein receiving user information for the call comprises receiving voice information.

6. The method of claim 1 wherein selecting the virtual connection comprises selecting the virtual connection based on the dialed number.

7. The method of claim 1 wherein selecting the virtual connection comprises selecting the virtual connection based on N00 call processing.

8. The method of claim 1 wherein selecting the virtual connection comprises selecting the virtual connection based on virtual private network (VPN) call processing.

9. The method of claim 1 wherein selecting the virtual connection comprises selecting the virtual connection based on personal/terminal mobility service call processing.

10. The method of claim 1 wherein transmitting the ATM cells comprises transmitting the ATM cells on a SONET connection.

11. The method of claim 1 wherein processing the signaling for the call in the signaling processor further comprises processing the signaling to determine digital signal processing (DSP) requirements for the call, wherein generating new signaling for the call further comprises generating new signaling that identifies the DSP requirements for the call, and wherein the method further comprises implementing the DSP requirements for the call in the ATM interworking multiplexer in response to the new signaling.

12. The method of claim 11 wherein implementing the DSP requirements comprises echo control for the call.

13. The method of claim 11 wherein implementing the DSP requirements comprises encrypting the call.

14. The method of claim 11 wherein implementing the DSP requirements comprises adjusting a decibel level for the call.

15. The method of claim 1 wherein the particular connection and the virtual connection are bi-directional and other user information is transmitted in ATM cells over the virtual connection to the ATM interworking multiplexer for transmission to the user, the method further comprising:

receiving ATM cells for the call from the virtual connection into the ATM interworking multiplexer;

converting the other user information in the ATM cells from the virtual connection into a format suitable for the particular connection; and

transmitting the other user information from the ATM interworking multiplexer over the particular connection.

16. A method of operating a telecommunications system to provide a call with a narrowband connection wherein a user places the call by sending signaling for the call to the telecommunications system and the telecommunications system facilitates the call by transporting user information in ATM cells over a virtual connection, and wherein the system comprises an ATM interworking multiplexer and a signaling processor linked to the ATM interworking multiplexer, the method comprising:

receiving the signaling for the call into the signaling processor;

processing the signaling for the call in the signaling processor to select the narrowband connection;

generating new signaling in the signaling processor to identify the virtual connection and the selected narrowband connection;

transmitting the new signaling to the ATM interworking multiplexer;

receiving the ATM cells for the call from the virtual connection into the ATM interworking multiplexer;

converting the ATM cells from the virtual connection into user information in narrowband format in the ATM interworking multiplexer in response to the new signaling; and

transmitting the user information from the ATM interworking multiplexer over the selected narrowband connection.

17. A method of operating a telecommunications system to provide a call with a virtual connection wherein a user places the call by sending signaling for the call to the telecommunications system and by transmitting user information to the telecommunications system over an access connection for the call, wherein the system comprises a plurality of access connections, a plurality of ATM interworking multiplexers connected to the access connections, a signaling processing system linked to the ATM interworking multiplexers, and an ATM cross-connect system connected to the ATM interworking multiplexers and configured to provide a plurality of virtual connections between the ATM interworking multiplexers, the method comprising:

providing the user with a first access connection to a first ATM interworking multiplexer;

receiving the signaling for the call into the signaling processing system;

processing the signaling for the call in the signaling processing system to select a virtual connection from the first ATM interworking multiplexer through the ATM cross-connect system to a second ATM interworking multiplexer and a second access connection to the second ATM interworking multiplexer;

generating, in the signaling processing system, a first new signal for the call that identifies the first access connection and the selected virtual connection, and a second new signal for the call that identifies the selected virtual connection and the second access connection;

transmitting the first new signal to the first ATM interworking multiplexer and the second new second new signal to the second ATM interworking multiplexer;

receiving the user information for the call from the first access connection into the first ATM interworking multiplexer;

converting the user information from the first access connection into ATM cells that identify the selected virtual connection in the first ATM interworking multiplexer in response to the first new signal;

transmitting the ATM cells from the first ATM interworking multiplexer through the ATM cross-connect system over the selected virtual connection to the second ATM interworking multiplexer;

converting the ATM cells that identify the selected virtual connection to user information for the second access connection in the second ATM interworking multiplexer in response to the second new signal;

transmitting the user information from the second ATM interworking multiplexer over the second access connection.

18. The method of claim 17 wherein receiving the signaling for the call comprises receiving a call set-up message.

19. The method of claim 17 wherein receiving the signaling for the call comprises receiving a Signaling System #7 (SS7) initial address message (IAM).

20. The method of claim 17 wherein receiving user information for the call from the first access connection comprises receiving user information from a DS0 connection.

21. The method of claim 17 wherein receiving user information for the call comprises receiving voice information.

22. The method of claim 17 wherein selecting the virtual connection comprises selecting the virtual connection based on the dialed number.

23. The method of claim 17 wherein selecting the virtual connection comprises selecting the virtual connection based on N00 call processing.

24. The method of claim 17 wherein selecting the virtual connection comprises selecting the virtual connection based on virtual private network (VPN) call processing.

25. The method of claim 17 wherein selecting the virtual connection comprises selecting the virtual connection based on personal/terminal mobility service call processing.

26. A method of operating a telecommunications system to provide a call with a virtual connection wherein a user places the call by sending signaling for the call to the telecommunications system and by transmitting user information to the telecommunications system over an access connection for the call, wherein the system comprises a plurality of access connections, a plurality of ATM interworking multiplexers connected to the access connections, a plurality of signaling processors linked to each other and the ATM interworking multiplexers, and an ATM cross-connect system connected to the ATM interworking multiplexers and configured to provide a plurality of virtual connections between the ATM interworking multiplexers, the method comprising:

providing the user with a first access connection to a first ATM interworking multiplexer;

receiving a first signal for the call into a first signaling processor;

processing the first signal in the first signaling processor to select a virtual connection for the call from the first ATM interworking multiplexer through the ATM cross-connect system to a second ATM interworking multiplexer and to select a point for the call connected to the second ATM interworking multiplexer;

generating a second signal in the first signaling processor that identifies the selected virtual connection and the point;

transmitting the second signal to a second signaling processor;

processing the second signal in the second signaling processor to select a second access connection for the call from the second ATM interworking multiplexer to the point;

generating a third signal in the first signaling processor that identifies the first access connection and the selected virtual connection;

transmitting the third signal to the first ATM interworking multiplexer;

generating a fourth signal in the second signaling processor that identifies the selected virtual connection and the second access connection;

transmitting the fourth signal to the second ATM interworking multiplexer;

receiving the user information for the call from the first access connection into the first ATM interworking multiplexer;

converting the user information from the first access connection into ATM cells that identify the selected virtual connection in the first ATM interworking multiplexer in response to the third signal;

transmitting the ATM cells from the first ATM interworking multiplexer through the ATM cross-connect system over the selected virtual connection to the second ATM interworking multiplexer;

converting the ATM cells that identify the selected virtual connection into user information suitable for the second access connection in the second ATM interworking multiplexer in response to the fourth signal; and

transmitting the user information from the second ATM interworking multiplexer over the second access connection to the point.

27. The method of claim 26 wherein receiving the first signal for the call comprises receiving a call set-up message.

28. The method of claim 26 wherein receiving the first signal for the call comprises receiving an Signaling System #7 (SS7) initial address message (IAM).

29. The method of claim 26 wherein receiving user information for the call from the first access connection comprises receiving user information from a DS0 connection.

30. The method of claim 26 wherein receiving user information for the call comprises receiving voice information.

31. The method of claim 26 wherein selecting the virtual connection comprises selecting the virtual connection based on the dialed number.

32. The method of claim 26 wherein selecting the virtual connection comprises selecting the virtual connection based on N00 call processing.

33. The method of claim 26 wherein selecting the virtual connection comprises selecting the virtual connection based on virtual private network (VPN) call processing.

34. The method of claim 26 wherein selecting the virtual connection comprises selecting the virtual connection based on personal/terminal mobility service call processing.

35. A telecommunications system to provide a call received over a particular connection with a virtual connection in response to signaling for the call, the system comprising:

a signaling processor operable to receive and process the signaling for the call to select the virtual connection for the call, and to generate and transmit new signaling that identifies the particular connection and the selected virtual connection;

an ATM interworking multiplexer operable to receive user information from the particular connection, convert the user information into ATM cells that identify the selected virtual connection in response to the new signaling, and to transmit the ATM cells from the ATM interworking multiplexer over the selected virtual connection; and

a link between the signaling processor and the ATM interworking multiplexer operable to transfer the new signaling from the signaling processor to the ATM interworking multiplexer.

36. The system of claim 35 further comprising an ATM cross-connect system connected to the ATM interworking multiplexer and configured to provide a plurality of virtual connections to the ATM interworking multiplexer.

37. A telecommunications system for transporting user information for a call over a virtual connection selected for the call in response to a first signal for the call, the system comprising:

a plurality of access connections operable to receive and transmit user information;

a plurality of ATM interworking multiplexers connected to the access connections and operable and to transmit and receive user information over the access connections and to transmit and receive ATM cells over a plurality of virtual connections;

an ATM cross-connect system connected to the ATM interworking multiplexers and configured to provide the plurality of virtual connections between the ATM interworking multiplexers;

a signaling processing means for receiving and processing the first signal for the call to identify a first access connection used for the call, to identify a first ATM interworking multiplexer connected to the first access connection, to select a virtual connection for the call from the first ATM interworking multiplexer to a second ATM interworking multiplexer, and to select a second access connection connected to the second ATM interworking multiplexer;

a signaling generation means coupled to the signaling processing means for generating a second signal for transmission to the first ATM interworking multiplexer that identifies the first access connection and the virtual connection, and for generating a third signal for transmission to the second ATM interworking multiplexer that identifies the virtual connection and the second access connection;

a signaling transfer means for transferring the second signal to the first ATM interworking multiplexer and for transferring the third signal to the second ATM interworking multiplexer;

a first adaption means in the first ATM interworking multiplexer for receiving the second signal, and in response, converting user information from the first access connection into ATM cells that identify the virtual connection and converting ATM cells from the virtual connection into user information suitable for the first access connection;

a second adaption means in the second ATM interworking multiplexer for receiving the third signal, and in response, converting the ATM cells from the virtual connection into user information suitable for the second access connection and converting user information from the second access connection into ATM cells that identify the virtual connection.

38. The system of claim 37 wherein the first signal is a Signaling System #7 (SS7) initial address message (IAM).

39. The system of claim 37 wherein the first access connection is a DS0 connection.

40. The system of claim 37 wherein the user information is voice information.

41. The system of claim 37 wherein the virtual connection is selected based on the dialed number.

42. The system of claim 37 wherein the virtual connection is selected based on N00 call processing.

43. The system of claim 37 wherein the virtual connection is selected based on virtual private network (VPN) call processing.

44. The system of claim 37 wherein the virtual connection is selected based on personal/terminal mobility service call processing.

45. A method of operating a telecommunications system to provide a call with a virtual connection wherein a user places the call by sending signaling for the call to the telecommunications system and by transmitting user information to the telecommunications system over a particular connection for the call, wherein the system comprises an ATM interworking multiplexer and a signaling processor linked to the ATM interworking multiplexer, the method comprising:

receiving the signaling for the call into the signaling processor wherein the signaling processor is external to any switch;

processing the signaling for the call in the signaling processor to select the virtual connection;

generating new signaling in the signaling processor to identify the particular connection and the selected virtual connection;

transmitting the new signaling to the ATM interworking multiplexer;

receiving the user information for the call from the particular connection into the ATM interworking multiplexer;

converting the user information from the particular connection into ATM cells that identify the selected virtual connection in the ATM interworking multiplexer in response to the new signaling; and

transmitting the ATM cells from the ATM interworking multiplexer over the selected virtual connection.

46. A method of operating a telecommunications system to provide a call with a virtual connection wherein a user places the call by sending signaling for the call to the telecommunications system and by transmitting user information to the telecommunications system over a particular connection for the call, wherein the system comprises an ATM interworking multiplexer and a signaling processor linked to the ATM interworking multiplexer, the method comprising:

receiving the signaling for the call into the signaling processor;

processing the signaling for the call in the signaling processor to select the virtual connection;

generating new signaling in the signaling processor to identify the particular connection and the selected virtual connection;

transmitting the new signaling to the ATM interworking multiplexer;

receiving the user information for the call from the particular connection into the ATM interworking multiplexer;

converting the user information from the particular connection into ATM cells that identify the selected virtual connection in the ATM interworking multiplexer in response to the new signaling wherein the virtual connection is not used for other calls until the call is released; and

transmitting the ATM cells from the ATM interworking multiplexer over the selected virtual connection.

47. A telecommunications system to provide a call received over a particular connection with a virtual connection in response to signaling for the call, the system comprising:

a signaling processor that is not coupled to a switch matrix and that is operable to receive and process the signaling for the call to select the virtual connection for the call, and to generate and transmit new signaling that identifies the particular connection and the selected virtual connection;

an ATM interworking multiplexer operable to receive user information from the particular connection, convert the user information into ATM cells that identify the selected virtual connection in response to the new signaling, and to transmit the ATM cells from the ATM interworking multiplexer over the selected virtual connection; and

a link between the signaling processor and the ATM interworking multiplexer operable to transfer the new signaling from the signaling processor to the ATM interworking multiplexer.