Communication method and device

Abstract

The invention relates to a communication method and device. And the first IMS network element receives a first call request from the first device, wherein the first call request is used for requesting to execute a call service with the second device. And the first IMS network element determines that the first device adopts a first coding mode to execute the call service, the first coding mode corresponds to the satellite access mode, and the first device accesses the network through the satellite. According to the embodiment of the invention, the first coding mode is set for the satellite access mode, and if the media negotiation process needs to be executed, the coding mode of the first device is known, so that the first device does not need to participate in the media negotiation process. Therefore, according to the media negotiation process, the satellite-ground signaling transmission process is reduced, the media negotiation efficiency is improved, and the time delay of the call service can be effectively reduced.

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