Patent ID: 8830990
Filing Date: 2014-09-09
Classification: H04W

Abstract:
1. A method for a call control node for setting up transmission of voice data from a calling party towards a called party via at least a first media gateway node, the call control node acting as a terminating call control node adapted for communicating with the first media gateway node and with an originating call control node, the method comprising: receiving first information from the originating call control node indicative of the first media gateway node usable for transmitting the voice data; receiving second information from the originating call control node indicative of a codec to be used from the calling party towards the first media gateway node usable for transmitting the voice data; determining whether the voice data is transmittable by the first media gateway node towards the called party encoded by the codec; determining whether the first media gateway is usable as a common media gateway node by both the originating call control node and the terminating call control node; sending first backward information to the originating call control node indicative of the codec; sending second backward information to the originating call control node indicative of the common media gateway node.