ANNOUNCEMENT SYSTEM AND THE CONTROL METHOD IN IP MULTIMEDIA SUBSYSTEMS NETWORK

摘要

A guide announcement system in an IMS network and a control method thereof are provided to reduce a cost by including a block inside a call process switch without an external application server. If it is impossible to connect a destination side terminal(20), call attempt is changed into the outside media resource control device(200). The SDP is included in the call request message and it transmits and the new SIP call setup phase is performed. A call processing switch(100) controls in order to perform announcement from a media resource control device to a caller terminal(10).