Network entity for interconnecting SIP end-points of different capabilities
First Claim
1. A method for operating a Session Initiation Protocol (SIP) network entity in a communication channel between a first SIP user agent and a second SIP user agent in a packet based communication network with available a first set of communication features supported by the first SIP user agent and available a second set of communication features supported by the second SIP user agent, including at least one communication feature in the second set of communication features which is not supported by the first SIP user agent, comprising:
- acting as a client application for the first SIP user agent and as a server application for the second SIP user agent; and
arranging to exchange signaling information with the first and second user agents to enable the second SIP user agent to utilize the at least one communication feature which is unsupported by the first SIP user agent during communications with the first SIP user agent.
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Accused Products
Abstract
There is described a Session Initiation Protocol (SIP) network entity for operating in a communications channel between a first SIP end point and a second SIP end point in a communication network. The first SIP end point has available a first set of communication features and the second SIP end point has available a second set of communication features, including at least one communication feature, for example Music on Hold, that is unavailable to the first SIP end point. The network entity acts as a client application for the first SIP end point and as a server application for the second SIP end point and is arranged to exchange signaling information with the SIP end points to enable the second SIP end point to utilize the at least one communication feature during communications with the first SIP end point.
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Citations
9 Claims
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1. A method for operating a Session Initiation Protocol (SIP) network entity in a communication channel between a first SIP user agent and a second SIP user agent in a packet based communication network with available a first set of communication features supported by the first SIP user agent and available a second set of communication features supported by the second SIP user agent, including at least one communication feature in the second set of communication features which is not supported by the first SIP user agent, comprising:
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acting as a client application for the first SIP user agent and as a server application for the second SIP user agent; and arranging to exchange signaling information with the first and second user agents to enable the second SIP user agent to utilize the at least one communication feature which is unsupported by the first SIP user agent during communications with the first SIP user agent. - View Dependent Claims (2, 3)
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4. A network entity for operating a Session Initiation Protocol (SIP) network in a communication channel between two end points in a packet based communication network, comprising:
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a first SIP user agent being a first end point and supporting a basic SIP communication feature set; a second SIP user agent being a second end point and supporting an enhanced SIP communication feature set; and a SIP Basic Call Enhancer located within the communication channel between the first and second SIP user agents that enables the second SIP user agent to utilize the enhanced SIP communication feature set which is unavailable to the first SIP user agent when communicating with the first SIP user agent. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification