Patent ID: 7110388

Claim:
A method for data transmission between a circuit switched network, via an interface means that includes a media gateway. and a packet switched network, the method comprising: coupling the circuit switched network to the packet switched network with the interface means, the interface means further comprising a first network layer for transporting only signaling information assigned to a call and a second network layer for transporting only payload information assigned to the call, wherein the two network layers in the circuit switched network are used for carrying the data transmission, via the interface means, between the circuit switched network and the packet switched network; processing the signaling information associated with the data transmission in the circuit switched network on the first network layer of the two network layers, wherein the first network layer includes a mobile service switching center; transferring the payload information associated with the data transmission on the second network layer of the two network layers in the circuit switched network utilizing a protocol stack, the protocol stack comprising: a first protocol stack in a mobile station, the first protocol stack coupled to a second protocol stack in a radio network means, the second protocol stack being coupled to a third protocol stack in the media gateway; and information frame generating means for generating an information frame containing payload information associated with the data transmission; and responsive to detecting a received, empty information frame a first discontinuous transmission (DTX) means in the second protocol stack discarding the received empty information frame to improve the data rate, wherein remaining information frames are forwarded to the packet switched network via a direct connection between the radio network means and the media gateway.