System and method for performing signaling on behalf of a stateless client

• US 7,701,924 B1
• Filed: 02/27/1998
• Issued: 04/20/2010
• Est. Priority Date: 02/27/1998
• Status: Expired due to Term

• Current Assignee: Cisco Systems, Inc.
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: McClung, Michael H., Hahn, Paul S., Bell, Robert T., Platt, Richard B.
• Primary Examiner(s): NGUYEN, STEVEN H D
• Application Number:
  US09/032,083
• Time in Patent Office: 4,435 Days
• Field of Search: 370351-356, 370/400, 370401-402, 370/410, 370/466, 370/467, 370/522, 370/463, 370/395.1, 370/260
• US Class Current: 370/352
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04L 65/1059 End-user terminal functionalities specially adapted for real-time communication
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment

Abstract

A system for, and method for, performing state-based signaling on behalf of a stateless client. In one embodiment, the system includes a controller, couplable to a state-based terminal, that translates at least one stateless signaling message received from the stateless client to at least one state-based signaling message for presentation to the state-based terminal thereby facilitating a media stream communications session between the stateless client and the state-based terminal over an Internet Protocol (IP)-based network.

Claims

1. A method, comprising:

receiving, by a server located at a customer premises coupled to a local network, an indication from at least one gateway device to initiate a communications session between a dumb terminal coupled to the local network and a remote terminal coupled to an external Internet Protocol (IP) packet switched network, the server comprising a network interface and a controller, the network interface coupled to the local network, the at least one gateway device coupled to the local network and the external IP packet switched network, the dumb terminal comprising a non-IP telephone;

generating, by the controller, an abstraction of at least one signaling message received from the dumb terminal by interpreting an intent of the at least one signaling message, the abstraction of the at least one signaling message comprising a description of the at least one signaling message based on the interpreted intent of the at least one signaling message;

translating, by the controller, the abstraction of the at least one signaling message; and

transmitting, by the server, the translated abstraction of the at least one signaling message to the at least one gateway device for presentation to the remote terminal, thereby establishing the communications session and facilitating a media stream path without the server between the dumb terminal and the remote terminal.

2. The method of claim 1, wherein the method employs an Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) transport protocol.

3. The method of claim 1, wherein the remote terminal comprises a computer executing telephony software.

4. The method of claim 1, further comprising:

receiving, by the controller, a plurality of first packets generated at the remote terminal for presentation to the dumb terminal;

translating, by the controller, the received first packets into voice information for presentation to a user of the dumb terminal;

receiving, by the controller, voice activity from the user;

generating, by the controller, a plurality of second packets that represent the voice activity; and

transmitting, by the controller, the generated second packets to the at least one gateway device for presentation to the remote terminal.

5. The method of claim 1, further comprising receiving, by the server, an off-hook signal in response to a user indicating a desire to establish the communications session.

6. The method of claim 1, wherein the at least one signaling message comprises an indication selected from the group consisting of:

a telephony off-hook event,

a telephony on-hook event,

a telephony button depressed event,

a telephony digit dialed event, and

a client registration event.

7. A server located at a customer premises coupled to a local network, comprising:

a processor;

a network interface coupled to the local network, the network interface operable to receive an indication from at least one gateway device to initiate a communications session between a dumb terminal coupled to the local network and a remote terminal coupled to an external Internet Protocol (IP) packet switched network, the at least one gateway device coupled to the local network and the external IP packet switched network; and

a storage device embodying a controller operable, when executed on the processor, to;

generate an abstraction of at least one signaling message received from the dumb terminal by interpreting an intent of the at least one signaling message, the abstraction of the at least one signaling message comprising a description of the signaling message based on the interpreted intent of the at least one signaling message;

translate the abstraction of the at least one signaling message; and

transmit the translated abstraction of the at least one signaling message to the at least one gateway device for presentation to the remote terminal, thereby establishing the communications session and facilitating a media stream path without the server between the dumb terminal and the remote terminal.

8. The server of claim 7, wherein the controller employs an Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) transport protocol.

9. The server of claim 7, wherein the remote terminal comprises a computer executing telephony software.

10. The server of claim 7, wherein the controller is further operable to:

receive a plurality of first packets generated at the remote terminal for presentation to the dumb terminal;

translate the received first packets into voice information for presentation to a user of the dumb terminal;

receive voice activity from the user;

generate a plurality of second packets that represent the voice activity; and

transmit the generated second packets to the at least one gateway device for presentation to the remote terminal.

11. The server of claim 7, wherein the network interface is further operable to receive an off-hook signal in response to a user indicating a desire to establish the communications session.

12. The server of claim 7, wherein the at least one signaling message comprises an indication selected from the group consisting of:

a telephony off-hook event,

a telephony on-hook event,

a telephony button depressed event,

a telephony digit dialed event, and

a client registration event.