Abstract: The invention relates to the protocol processing in a network element. The idea of the invention is to divide an IP protocol stack between a CPU and several DSP's in a network element. Because the CPU contains a MAC-interface for an Internet interface and it routes IP traffic to the right DSP, a certain part of the IP protocol stack must be handled in the CPU. Each DSP handles the rest of the IP protocol.

Abstract: The invention concerns a system, which allows speech transmission between a mobile station and terminal equipment connected to a data network. The terminal equipment, preferably an Internet telephone, sends and receives data packets in accordance with the protocol of the data network in question and is provided with telephone characteristics. It has a speech coder in accordance with the mobile station system which synthesises the original speech from the speech parameters sent by the mobile station and contained in the data packets arriving from the data network and which correspondingly produces speech parameters for location in outgoing data packets. The speech parameters are conveyedas such between the mobile station and the terminal equipment without applying any additional coding to them.