Traffic routing across and between networks
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United States of America Patent
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Oct 20, 2015
Grant Date -
Sep 26, 2013
app pub date -
Dec 10, 2010
filing date -
Dec 10, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method of routing signalling plane traffic through or out of an IP Multimedia Subsystem, IMS, network. The method comprises maintaining within user profile data stored in a subscriber database of the IMS network, routing information defining signalling plane routing profiles for a user associated with the user profile data. Said routing information is transferred from the subscriber database to a Call Session Control Function, CSCF, of the IMS network at or following registration of said user to the IMS network. The method then comprises handling a Session Initiation Protocol, SIP, request for said user at the CSCF including adding said routing information into the request and forwarding the SIP request to a next hop node, and, at said next hop node or at a further downstream node, making a routing decision for the SIP request or for related signalling on the basis of the routing information contained within the SIP request.
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