Method and system for advanced termination of communication sessions
First Claim
1. A method of reducing call setup delay in a communication system, the method comprising:
- receiving into a terminal agent a request to initiate a communication session with a client station;
in response to the request, the terminal agent sending an initiation-message to the client station; and
the terminal agent responding to the request without first receiving from the client station a response to the initiation-message, wherein responding to the request comprises positively acknowledging the request, and wherein positively acknowledging the request comprises sending positive response (i) indicating that the session can be set up with the client station and (ii) indicating at least one device capability of the client station.
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Accused Products
Abstract
A method and system that helps to reduce delay in initiating communication sessions. A network entity operates as a signaling agent on behalf of a terminating node and positively acknowledges a session initiation request on behalf of the terminating node without first receiving a positive acknowledgement from the terminating node. For example, the network entity may first send an alert message to the terminating node and then positively respond to the session initiation request before receiving from the terminating node a response to the alert message. As another example, the network entity may first positively respond to the session initiation request and then send an alert message to the terminating node. This arrangement can advantageously allow the session setup process to continue, without first waiting for an actual positive acknowledgement from the terminating node.
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Citations
26 Claims
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1. A method of reducing call setup delay in a communication system, the method comprising:
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receiving into a terminal agent a request to initiate a communication session with a client station; in response to the request, the terminal agent sending an initiation-message to the client station; and the terminal agent responding to the request without first receiving from the client station a response to the initiation-message, wherein responding to the request comprises positively acknowledging the request, and wherein positively acknowledging the request comprises sending positive response (i) indicating that the session can be set up with the client station and (ii) indicating at least one device capability of the client station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A terminal agent for reducing call setup delay in a communication system, the terminal agent comprising a network interface, a processor, and data storage,
wherein the terminal agent is arranged to (i) receive a session initiation request seeking to set up a communication session with a client station, (ii) to send to the client station an initiation-message notifying the client station of the request, and (iii) to positively respond to the session initiation request without first receiving from the client station a response to the initiation-message, wherein the terminal agent responds to the session initiation request before sending the initiation-message to the client station, and wherein the session initiation request comprises a Session Initiation Protocol (SIP) INVITE request message, and the response comprises a SIP 200 OK message.
Specification