Research on Multimedia Ring Back Tone Service Based on H.248/Megaco Protocol
基于H.248/Megaco协议的多媒体回铃音业务的研究*

The article analyzed Color Ring Back Tone(CRBT) service scheme which is based on originating mobile switching center, an in depth solution of Multimedia Ring Back Tone (MRBT) service based on H.248/Megaco within 3GPP R4 network was proposed and the relevant call flows were described.