Network entity for interconnecting sip end-points of different capabilities
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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 comprises means for acting 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.
52 Citations
12 Claims
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1-3. -3. (canceled)
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4. A method for operating a Session Initiation Protocol (SIP) network entity in a communication channel between a first end point and a second end point in a packet based communication network with available a first set of communication features at the first end point and available a second set of communication features at the second end point, including at least one communication feature in the second set of communication features which is unavailable to the first end point, comprising:
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acting as a client application for the first end point and as a server application for the second end point; and
arranging to exchange signalling information with the first and second end points to enable the second end point to utilise the at least one communication feature which is unavailable to the first end point during communications with the first end point. - View Dependent Claims (5, 6)
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7. 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 located at a first end point having a basic SIP communication feature set;
a second SIP user agent located at a second end point having 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 user agent to utilize the enhanced SIP communication feature set which is unavailable to the first user agent when communicating with the first user agent. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification