Patent ID: 8917850

Claim:
A method for implementing Multimedia Caller Identification (MCID) services, comprising: receiving, by a network, a call request from a calling User Equipment (UE), where the call request carries a calling UE identifier and a called UE identifier; and determining, by the network, that the calling UE is an MCID service subscriber according to the calling UE identifier, sending, by the network, the call request to the called UE according to the called UE identifier, determining that a called UE supports MCID early media according to a first response message from the called UE; forwarding, by the network, the first response message from the called UE to the calling UE, receiving a provisional response acknowledgement (PRACK) returned by the calling UE, inserting an MCID early media request into the received PRACK message, sending the PRACK message carrying the MCID early media request to the called UE, negotiating the MCID early media with the called UE, receiving an MCID early media answer from the called UE when the negotiation succeeds, and playing an MCID to the called UE.