Introduction - If you have any usage issues, please Google them yourself
Do-It-Yourself wrote sip protocol stack, SIP (Session Initiation Protocal) known as the Session Initiation Protocol is the IETF (Internet Engineering Task Force) organization in 1999 as a network-based real-time IP communications applications a letter the agreement.
Packet : 101259387sip_protocolstack.rar filelist
SIP_ProtocolStack.pdf