METHOD AND DEVICE FOR REALIZING COLLECT CALL SERVICE IN IP MULTIMEDIA SUBSYSTEM NETWORK

摘要

Provided are a method and device for realizing a collect call service in an IP multimedia subsystem (IMS) network. The method includes: receiving a call request containing a collect call prefix sent by a calling subscriber in the IMS network; and sending a session initiation protocol (SIP) session request message containing the collect call identifier to a called AS according to the call request so that the called AS executes collect call processing on the called subscriber according to the collect call identifier. As the collect call identifier is added in the SIP session request message when a calling AS sends the SIP session request message of collect call to the called AS, the called AS can learn that this SIP session request message is the collect call service on the basis of this collect call identifier, thereby realizing the collect call service in the IMS network.