Study and implementation of IP-PBX platform based on SIP protocol
Cheng Ji-zhen · Journal of Xi'an University of Post and Telecommunications · 2007
Different from traditional H.323 of IP protocol,this paper gives an architecture of IP-PBX system based on SIP protocol.According to the network element structure of SIP protocol analyzed first,this paper constructs a set of whole-service IP-PBX system which consist of VoIP 、FoIP and MoIP services,then induces the key component techniques of SIP protocol stack,provides an extendable platform for IP Network value-added service(VAS).