Network access to internet and stored multimedia services from a terminal supporting the H.320 protocol

• US 5,724,355 A
• Filed: 10/24/1995
• Issued: 03/03/1998
• Est. Priority Date: 10/24/1995
• Status: Expired due to Term

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Suresh, Sethuraman, Williams, Hugh L., Markowitz, Robert Edward, Robinson, Bethany Scott, Katseff, Howard Paul, Bruno, Richard Frank, Perea, Carlos Alberto
• Primary Examiner(s): HSU, ALPUS
• Application Number:
  US08/547,216
• Time in Patent Office: 861 Days
• Field of Search: 395/200.02, 395/200.1, 395/200.15, 395/200.2, 395/500, 395/800, 370/389, 370/395, 370/400, 370/401, 370/410, 370/420, 370/428, 370/465, 370/466, 370/467, 370/522, 370/524
• US Class Current: 370/401
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/6429 Terminal adapters
• CPC Class Codes: H04L 2012/6443 Network Node Interface, e.g. Routing, Path finding
• CPC Class Codes: H04L 2012/6456 Channel and bandwidth allocation
• CPC Class Codes: H04L 2012/6472 Internet
• CPC Class Codes: H04L 2012/6475 N-ISDN, Public Switched Telephone Network [PSTN]
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/169 Special adaptations of TCP, UDP or IP for interworking of IP based networks with other networks protocols for interworking, protocol conversion H04L69/08
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 3/567 Multimedia conference systems
• CPC Class Codes: H04M 7/12 for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal

Abstract

Internet access is provided to a multimedia terminal (101, 102, 103, 104) supporting the H.320 protocol through a gateway server (125) that is connected to the Internet. The data stream of the H.320 bearer channel (ISDN phone line or switched 56 kbps facilities) is used for the exchange of data between the accessing terminal and the gateway server, which outputs and receives such data onto and from the Internet, respectively. The gateway server is implemented to function to directly exchange on the H.320 data stream information requests and responsive data in the TCP/IP format used for Internet transport. Alternatively, the gateway server is implemented to function as a proxy to which requests are passed from the terminal over the H.320 data stream, and where function calls are made and locally converted to TCP/IP format for transport onto the Internet. For responsive data received from the Internet, the proxy gateway server removes the TCP/IP formatting and transmits the resultant data back to the terminal over the H.320 data stream.

Claims

1. In a telecommunications network, a method of providing access to the Internet to a multimedia terminal capable of communicating voice, video and data signals over separate voice, video and data streams, respectively, on a bearer channel in accordance with a standardized H.320 protocol, the method comprising the steps of:

establishing a data connection between the multimedia terminal and a gateway server that is remote from the terminal and is connected to the Internet, the data connection being at least in part over the bearer channel on only at least a portion of the data stream, for transmitting data associated with a request and a response to such request to and from a provider connected on the Internet, respectively, while the multimedia terminal simultaneously maintains the capability of transmitting and receiving the video and voice signals on the video and voice streams, respectively, on the bearer channel;

receiving, at the gateway server from the multimedia terminal over the data connection, the data associated with the request;

transmitting, by the gateway server, onto the Internet, an executed request initiated by the terminal to the provider in a format that is compatible for transmission on the Internet;

receiving, at the gateway server, from off the Internet from the provider, a response to the request; and

;

forwarding, by the gateway server, the response to the request to the terminal over the data connection.

2. The method of claim 1 wherein the multimedia terminal executes the request and transmits the executed request to the gateway server in a format that is compatible for transmission on the Internet, the gateway server receiving the executed request from the multimedia terminal over the data connection and transmitting the executed request onto the Internet to the provider.

3. The method of claim 2 wherein the response to the request from the provider received by the gateway server from the Internet is directly forwarded, in an Internet-compatible format that it is received, to the multimedia terminal over the data connection.

4. The method of claim 2 wherein the executed request received by the gateway server from the multimedia terminal is received in a TCP/IP format.

5. The method of claim 1 further comprising the step of converting, at the gateway receiver, the received data associated with the request into the executed request for transmission on the Internet to the provider.

6. The method of claim 5 wherein prior to the step of forwarding the response to the request to the multimedia terminal the method further comprises the step of removing formatting used for the transmission of the response on the Internet.

7. The method of claim 5 wherein the format compatible for transmission on the Internet is a TCP/IP format.

8. The method of claim 5 wherein the request received by the gateway server from the multimedia terminal is a Winsock function call, and the method further comprises the step of making a function call to a Winsock dynamic link library stored within the gateway server in response to the received Winsock function call, which function call is formatted by the gateway server for transmission on the Internet in a TCP/IP format.

9. The method of claim 1 further comprising the step of compressing the response from the provider received by the gateway server before it is forwarded to the multimedia terminal over the data connection.

10. The method of claim 9 further comprising the step of decompressing a compressed request received by the gateway server from the multimedia terminal over the data connection.

11. The method of claim 1 when after the step of establishing the data connection, the method further comprises the step of adjusting the bandwidth of the data stream to be larger than the bandwidths of either the voice or video streams.

12. The method of claim 1 wherein the bearer channel is an ISDN phone line.

13. The method of claim 1 wherein the bearer channel is at least one 56 kbps switched line.

14. A gateway server for providing Internet access to a multimedia terminal capable of communicating voice, video and data signals over separate voice, video and data streams, respectively, on a bearer channel in accordance with a standardized H.320 protocol, the server comprising:

means for connecting to a data connection for connecting the gateway server to the multimedia terminal at least in part over the bearer channel on only a portion of the data stream, the data connection having transmitted thereon data associated with a request made by the multimedia terminal to a provider connected on the Internet and a response to such request from the provider to the multimedia terminal, while the multimedia terminal simultaneously maintains the capability of transmitting and receiving the video and voice signals on the video and voice streams, respectively, on the bearer channel,;

means for connecting to the Internet;

means for receiving from the multimedia terminal over the data connection the data associated with the request;

means for transmitting onto the Internet an executed request to the provider in a format that is compatible for transmission on the Internet;

means for receiving from the Internet from the provider a response to the request; and

means for forwarding the response to the request to the multimedia terminal over the data connection.

15. The gateway server of claim 14 wherein the multimedia terminal executes the request and transmits the executed request to the gateway server in a format that is compatible for transmission on the Internet on the only at least a portion of the data stream of the bearer channel over the data connection, the means for transmitting onto the Internet transmitting the executed request to the provider.

16. The gateway server of claim 15 wherein the received response to the request from the provider is directly forwarded by said means for forwarding to the multimedia terminal over the data connection in the Internet-compatible format that it is received.

17. The gateway server of claim 15 wherein the executed request received from the multimedia terminal is received in a TCP/IP format.

18. The gateway server of claim 14 further comprising means for converting the received data associated with the request into the executed request for transmission over the Internet to the provider.

19. The gateway server of claim 18 wherein, before forwarding the response to the request to the multimedia terminal the formatting used for the transmission of the response on the Internet is removed.

20. The gateway server of claim 18 wherein the format compatible for transmission on the Internet is a TCP/IP format.

21. The gateway server of claim 18 wherein the request received from the multimedia terminal is a Winsock function call, and the gateway server further comprises a stored Winsock dynamic link library to which a function call is made in response to the received Winsock function call, which function call is formatted for transmission on the Internet to a TCP/IP format.

22. The gateway server of claim 14 further comprising means for compressing the received response from the provider before forwarding it to the multimedia terminal over the data connection.

23. The gateway server of claim 22 further comprising means for decompressing a compressed request received from the multimedia terminal over the data connection.

24. The gateway server of claim 14 wherein the bearer channel is an ISDN phone line.

25. The gateway server of claim 14 wherein the bearer channel is at least one 56 kbps switched line.