Patent ID: 8724786

Claim:
A method for implementing multimedia ring back tone service, comprising: receiving, by a caller tone application server, a call request originated by a calling terminal to a called terminal; parsing, by the caller tone application server, a tone playing policy according to the call request, wherein the tone playing policy specifies whether to play a caller tone or a callee tone to the calling terminal; determining, by the caller tone application server, that the caller tone needs to be played to the calling terminal according to a parsing result; adding, by the caller tone application server, a caller tone flag indicating that the caller tone needs to be played to the calling terminal into the call request after the determination; sending, by the caller tone application server, the call request comprising the caller tone flag to a callee tone application server to indicate the callee tone application server to skip the callee tone; performing, by the caller tone application server, a caller tone media negotiation; and thereafter, playing, by the caller tone application server, the caller tone to the calling terminal upon reception of an alerting signal from the called terminal.