The developed module is intended for realization of telephone conversation between two phones. The voice traffic acts in the module outside (from other module) and is passed to a SIP-server through the Internet-connection 3G \EDGE \GPRS or WiFi. Further the SIP-server passes data to another phone with the same module. The accepted voice traffic is passed by the module outward. The module is responsible for fulfilment of a call, reception \deviation of an entering call and transfer of voice data.