Universal port user agent capable of caching route information among sessions and associated method
First Claim
1. A method of setting up sessions comprising the steps of:
- (a) storing route information for a first session to a destination; and
(b) setting up a second session to the same destination using the stored route information.
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Abstract
An initial call is setup by a universal port user agent by sending an invitation to the proxy server. The proxy server performs a directory lookup from a back end server to obtain route information to a destination. The route information is passed to the universal port user agent in response and is stored in the universal port user agent. When subsequent calls to the same destination are requested, the subsequent calls can be setup using the stored route information. A universal port user agent performs these call setups. The route information memory is managed based on a number of routes stored and the age of the stored routes. In certain embodiments the calls are setup using the Session Initiation Protocol (SIP).
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Citations
20 Claims
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1. A method of setting up sessions comprising the steps of:
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(a) storing route information for a first session to a destination; and
(b) setting up a second session to the same destination using the stored route information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method in a universal port user agent of setting up sessions comprising the steps of:
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(a) for a session to a destination, storing route information obtained for the destination; and
(b) setting up a subsequent session to the same destination by using the stored route information. - View Dependent Claims (17, 18, 19)
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20. A universal port user agent for enabling setup of sessions, comprising a processor and communication ports to initially connect with a destination phone and store route information and to again connect with the same destination phone using the stored route information.
Specification