Separation device and method for transmitting voice signal

摘要

A separation device and a method for transmitting voice signal are disclosed. The separation device includes a line interface (LINE) adapted to provide an interface for connecting to a telecommunication access system which provides PSTN and data services; a data interface (ADSL) adapted to provide an interface connected with CPE and connected with the line interface; a first communication interface (TEL) adapted to provide an interface connected with a PSTN communication terminal; a second communication interface (FXS) adapted to provide an interface connected with a FXS1 interface of the CPE; and a connection switching unit (SWITCH) adapted to connect the first communication interface (TEL) with the line interface (LINE) or connect the first communication interface (TEL) with the second communication interface (FXS), and to perform switching between the two connections to implement PSTN communication or VoIP communication respectively. The PSTN communication terminal may implement the PSTN communication and the VoIP communication respectively according to the solution of the invention.