Dial-up switching and transmission of broadband communication channels through a local exchange

• US 5,329,572 A
• Filed: 09/24/1992
• Issued: 07/12/1994
• Est. Priority Date: 09/24/1992
• Status: Expired due to Fees

• Current Assignee: American Telephone & Telegraph Company (AT&T, Inc.)
• Original Assignee: AT&T, Inc.
• Inventors: Martens, Gregory A.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): VU, HUY DUY
• Application Number:
  US07/951,494
• Time in Patent Office: 656 Days
• Field of Search: 370/58.1, 370/58.2, 370/58.3, 370/94.1, 370/60, 370/62, 370/60.1, 370/68.1, 370/110.1, 370/69.1, 370/71, 370/85.7, 370/85.9, 379/219, 379/220, 379/221, 379/222, 379/224, 379/225, 379/226, 379/227, 379/229, 379/230, 379/231, 379/232, 379/233, 379/234, 379/235, 379/237, 379/240, 379/242, 379/243 , 379/245, 379/246, 379/258, 379/272, 379/90
• US Class Current: 348/14.11
• CPC Class Codes: H04J 2203/0066 Signalling, e.g. protocols, reference model
• 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 11/0478 Provisions for broadband connections

Abstract

A telephone exchange provides dial-up switched connections for customers'"'"' broadband data terminal equipment (DTE). In response to data received over an associated narrowband channel, the exchange establishes a broadband transmission path to a broadband DTE associated with the narrowband channel. Upon receiving a number for the called party broadband DTE over the narrowband channel, the switch establishes an interoffice broadband channel for communications between the originating and destination DTE.

Claims

1. A telephone exchange for providing broadband dial-up switched connections for broadband customer data terminal equipment(DTE) comprising:

narrowband transmission channels, broadband transmission channels, and broadband interoffice transmission channels;

means for accepting over one of said narrowband transmission channels a request for broadband service between a customer'"'"'s certain DTE and another DTE supported by another exchange;

means, responsive to said accepting means receiving said request, for automatically controlling the establishment of a broadband connection between one of said broadband transmission channels and said certain DTE;

means for communicating with an interoffice communications network to establish a broadband channel over one of said broadband interoffice transmission channels to said another exchange which supports said another DTE;

means for connecting said one broadband transmission channel and said one broadband interoffice transmission channel to establish a broadband connection through the telephone exchange between said certain DTE and another DTE, thereby permitting broadband communications upon dial-up demand by a customer.

2. The exchange according to claim 1 wherein said accepting means accepts data signals sent over a narrowband dial-up channel, said data signals including a telephone number of the another DTE.

3. The exchange according to claim 1 wherein said controlling means comprises means for sending command signals to multiplexing equipment coupled to said broadband transmission channels and said certain DTE, said command signals controlling which DTE coupled to the multiplexing equipment are connected to the broadband transmission channels.

4. The exchange according to claim 3 further comprising means for storing a line location address of the multiplexing equipment of each supported DTE and a corresponding telephone number.

5. The exchange according to claim 1 wherein said communicating means comprises means for sending call establishment data via a channel in a first frame over said interoffice communications network to said another exchange, said sending means sending communications from said certain DTE to said another DTE over a second frame.

6. The exchange according to claim 5 wherein all channels in said second frame are utilized for carrying communications between said certain DTE and said another DTE.

7. In a telephone exchange having a plurality of narrowband transmission channels, broadband transmission channels, and broadband interoffice transmission channels, a method for providing broadband dial-up switched connections for broadband customer data terminal equipment (DTE) comprising the steps of:

accepting over one of said narrowband transmission channels a request for broadband service between a customer'"'"'s certain DTE and another DTE supported by another exchange;

upon receiving a customer request for broadband service, automatically controlling the establishment of a broadband connection between one of said broadband transmission channels and said certain DTE;

communicating with an interoffice communications network to establish a broadband channel over one of said broadband interoffice transmission channels to said another exchange which supports said another DTE;

connecting said one broadband transmission channel and said one broadband interoffice transmission channel to establish a broadband connection through the telephone exchange between said certain DTE and another DTE, thereby permitting broadband communications upon dial-up demand by a customer.

8. The method according to claim 7 wherein said accepting step accepts data signals sent over a dial-up narrowband channel, said data signals including a telephone number of the another DTE.

9. The method according to claim 7 further comprising the step of storing a line location address of each supported DTE and a corresponding telephone number.

10. The method according to claim 7 wherein said controlling step comprises sending command signals to multiplexing equipment coupled to said broadband transmission channels and said certain DTE, said command signals controlling which DTE coupled to the multiplexing equipment are connected to the broadband transmission channels.

11. The method according to claim 7 wherein said communicating step comprises the steps of utilizing a channel in a first multichannel frame for sending call establishment data via said interoffice communications network to said another exchange, and establishing a second multichannel frame for carrying communications between said certain DTE and said another DTE.

12. The method according to claim 11 wherein all channels in said second multichannel frame can be utilized for carrying communications between said certain DTE and said another DTE.

13. A switching system that provides dial-up broadband connections for customer data terminal equipment (DTE) comprising:

a telephone exchange;

a plurality of broadband communication channels coupled to said exchange;

broadband switch coupled to said broadband communication channels and customer DTE'"'"'s;

means utilized by customers for sending data over a dial-up line to said telephone exchange requesting a broadband connection from a certain DTE to another broadband DTE in another switching system;

control channel coupling said telephone exchange and broadband switch;

means responsive to said sending means for transmitting command signals over said control channel from said telephone exchange to said broadband switch, said command signals establishing a connection between one of said broadband communication channels and a certain customer DTE;

means of said exchange for communicating with an interoffice communications network to establish an interoffice broadband channel over another of said broadband communication channels to said another system which supports said another DTE;

means for connecting said one broadband transmission channel and said another broadband communication channel to establish a broadband connection through the telephone exchange between said certain DTE and another DTE, thereby permitting broadband communications upon dial-up demand by a customer.

14. The system according to claim 13 wherein said dial-up line comprises a narrowband channel.

15. The system according to claim 13 further comprising means associated with the exchange for storing an address location and telephone number for each broadband DTE, said address location corresponding to the port on the switch that the associated DTE is connected.

16. The system according to claim 13 wherein said communicating means comprises means for sending call establishment data via a channel in a first frame over said interoffice network to said another system, said sending means sending communications from said certain DTE to said another DTE over a second frame.

17. In a switching system that provides dial-up broadband connections for customer data terminal equipment (DTE), said system including a telephone exchange, a plurality of broadband communication channels coupled to said exchange, and a broadband switch coupling said channels and customer DTE'"'"'s, said method comprising the steps of:

sending data from a customer to said exchange requesting a broadband connection between a certain DTE and another broadband DTE in another switching system;

responsive to said data being sent, transmitting command signals from said exchange to said broadband switch, said command signals establishing a connection between one of said broadband transmission channels and said certain customer DTE;

communicating with an interoffice communications network to establish an interoffice broadband channel from said telephone exchange to said another system which supports said another DTE;

connecting said one broadband transmission channel and said interoffice broadband channel to establish a broadband connection through the telephone exchange between said certain DTE and another DTE, thereby permitting broadband communications upon dial-up demand by a customer.

18. The method according to claim 17 wherein said sending step comprises sending said data over narrowband dial-up channel to said exchange.

19. The method according to claim 17 further comprising the step of storing an address location and telephone number for each broadband DTE, said address location corresponding to a port on the switch to which the associated DTE is connected.

20. The method according to claim 17 wherein said communicating step comprises the steps of utilizing a channel in a first frame for sending call establishment data via said interoffice network to said another system, and establishing a second frame over said interoffice network for carrying communications between said certain DTE and said another DTE.