The embodiment of the present specification provides a method and device for communication based on VoIP and CT network, wherein the method comprises: a calling terminal initiates a call request on an Internet side, wherein the call request contains a calling identification; an Internet
server accesses a landing gateway;
the Internet server or the landing gateway converts the calling identification into a calling number recognizable by a CT network; according to the call request, an Internet side signaling is generated, wherein the calling number is encapsulated in
the Internet side signaling; the landing gateway performs
authentication and
verification on
the Internet side signaling, and converts the Internet side signaling into a telecommunication side signaling after the
verification; the telecommunication side signaling is sent to the CT network; the CT network receives the telecommunication side signaling, and connects a called terminal to realize communication with full-process
traceability. The embodiment of the present specification can integrate traditional voice technology and emerging VoIP technology, and realize efficient and stable
voice communication.