SYSTEM, APPARATUS, AND METHOD FOR ESTABLISHING CIRCUIT-SWITCHED COMMUNICATIONS VIA PACKET SWITCHED NETWORK SIGNALING

摘要

A system, apparatus and method for establishing circuit-switched (CS) communications in packet-switched (PS) multimedia networks (210) such as IMS, and providing services via the PS networks (210) to CS domain (224) users. A dialog (222) is established between terminals (200/202) through the PS multimedia network (210). A service is provided to at least one of the terminals (200/202) byway of the dialog (222). CS bearer information, including an indication that a communication flow is requested via a CS network, is communicated between the terminals by way of the dialog (222). A communication flow (234) via the CS network is effected between the terminals (200/202) as directed by the CS bearer information. IMS or other PS multimedia network services can thus be provided to users otherwise communicating via the CS-domain.