Method, apparatus and system for bearing voice data

摘要

A method for bearing voice data includes: a) a calling MSCe and the called MSCe determining that a calling MS and a called MS support the same voice coding and decoding type and that a call is a point-to-point call; b) the calling MSCe and the called MSCe sending Bearer Update Requests to the calling BSC and the called BSC, respectively; and c) the calling BSC and the called BSC setting up a voice bearer path between the calling MS and the called MS according to the requests from the MSCes. As a result, transparent transmission of voice data in a MGW is avoided so that transmission delay can be reduced and additional loading of the MGW can be avoided.