Ip-based implementation and CRBT CRBT media server

The present invention provides an IP CRBT implement the method and CRBT media server, wherein the method comprises selecting: a first media negotiation with the signaling server to obtain information of the media gateway; the recording; and recording the information media gateway information media gateway, with the media gateway a second media negotiation; after the second media negotiation is completed, receives the RBT playing message service logic sent by the server, the RBT playing information carrying ring tone file path message ; recording the ringtone file path information; obtaining ring tone file, according to the ring tone file path information is recorded, the ring tone file previously encoded IP-based RBT call the desired media format; the ringtone send a file to the media gateway by the media gateway to the calling terminal. The present invention can improve the CRBT media server performance, reduces system complexity, improve memory usage, reducing memory copy, reduce sound jitter.