Research of the multi-service model based on softswitch in coal mine

In order to realize the fusion of coal mine voice network, data network and video monitoring network, to improve reliability, flexibility and expansibility of safety production and management, the paper analyses the system structure of the softswitch, and researching and designing based multi-service based on softswitch of coal mine. The model of multi-service platform based on softwitch in coal mine is established, which includes some core module like call control, dispatching and controlling, and communication between the current network and management. Layered software design is adopted, which categorizes the software into the transport layer, protocol stack and application layer. Multi-service call control module based on Visual C++ and SQL Server 2000 is developed based on SIP, SIP-INVITE and RTP control module signaling is tested and analyzed, and the test results show that the system runs correctly.