Automatic disposition built-in IP-PBX as well as communication method thereof

The invention provides an embedded type IP-PBX system which can automatic collocate terminal equipment. The system has characteristic in that the system includes: a main control module, a media gateway module, a network module, a memory module, a signal control module, an electrical source module and a serial communication module. The invention also provides a communication method based on the embedded type IP-PBX system. The invention has advantages that: a terminal node equipment connecting with the IP-PBX system through network, compatible with traditional PSTN signal, supporting a plurality of communication protocols and a plurality of speech codec methods, realizing conversion of a plurality of codec methods, convenient management method and flexible configuration, providing rich extended function, high-reliability and low-cost design, using hardware platform of embedded type processor with low power consumption and reducing hardware cost greatly.