Mobil - Mobil service method invocation bypass

摘要

The invention Mobil relates to providing bypass service when the mobile calling method-mobile calls when to / terminating switch the vocoder bypass mode by the mobile in order to prevent the deterioration of communication quality due to the double transcoding.; The present invention is the called party receives the setting information call at the MSC mobile-mobile call is from / to inform in the destination MSC to the BSC, and the called party vocoder in the switch to the bypass mode, the calling mode of the traffic frame transmission side It is examined in the vocoder.; In the called party and send the traffic frames and the response signal to the calling party, and transmitted to the destination of the traffic frame from the calling party, if the foot / called-party-mode scan of a traffic frame from vocoder result bypass mode, and switches the transmitting or receiving mode to the bypass mode Or bypass mode is maintained by transcode mode.