Patent ID: 9118616
Filing Date: 2015-08-25
Classification: H04L,H04N

Abstract:
1. A session control method in a Converged IP Messaging (CPM) server for supporting a CPM session between a first client subscribing to a CPM service and a second client not subscribing to the CPM service, the session control method comprising: after the CPM session is initiated between the first and second clients through the CPM server and an InterWorking Function (IWF), receiving a session modification request message including a plurality of media from the first client; sending the session modification request message including the plurality of media to the IWF through the initiated CPM session; receiving an acceptance response message from the IWF, when a first portion of the plurality of media is supported by the IWF and a second portion of the plurality of media is unsupported by the IWF; modifying the CPM session to service the first portion of the plurality of media; and sending a session request message including type information of the second portion of the plurality of media to another IWF.