System and method for managing call continuity in IMS network environment

A user equipment (UE) device comprising:

• a processor configured to control at least one of a plurality of sub-systems to provide call information associated with a call having bearer traffic in one domain to a network node disposed in an Internet Protocol (IP) multimedia subsystem (IMS) network, the call information including a call reference associated with the call;
• the processor further configured to control at least one of the plurality of sub-systems to process an IP multimedia routing number (IMRN) received from the network node;
• the processor further configured to control at least one of the plurality of sub-systems to verify that the call reference received from the network node is valid;
• and
• the processor further configured to control at least one of the plurality of sub-systems to send a message containing the IMRN to the network node to transfer the call having bearer traffic to another domain.