Patent ID: 7796603
Filing Date: 2010-09-14
Classification: H04L

Abstract:
1. A machine-implemented method operative within a signaling path between given entities that are attempting to set up a media session via transfer of signaling messages that conform to the Session Description Protocol (SDP), wherein the given entities are compliant with the Session Initiation Protocol (SIP) comprising: receiving a media control policy that includes at least one rule, the rule specifying a particular action to be taken with respect to a media session as a function of a condition stated in the rule, where the condition is ascertainable from information in a media description of a signaling message; monitoring the signaling path for a given signaling message; evaluating the media description in the given signaling message against the condition stated in the rule of the media control policy; if the condition stated in the rule of the media control policy is met, altering the media description within the given signaling message to conform to the media control policy to generate an updated signaling message; and forwarding the updated signaling message, wherein the altering comprises: