The invention relates to an intelligent external device based on intelligent network and relative method, wherein said external device comprises: a resource control module for building the communication between the external device and the SSP, fixing the relation of relay number between the SSP and external device and the sound processing module, and building the data connection between sound processing modules; a sound processing module for realizing special resource SRF function, and building the TCP/IP communication with the resource control module. And the inventive method comprises: SSP uses TCP/IP sends the message to the resource control module; the resource control module based on the logic relay number of message sends the message to relative sound processing module; and the sound processing module sends respond message to the resource control module, to transfer it to the SSP; and the SSP can detect the IP operation state and reduce the system cost. |