hello…im am confused to understand sip protocol…plz help me…
What do you want to know?
Basically SIP is Session Initiated Protocol. It usually uses UDP port 5060 for signaling and control and RTP ports (usually in a range like for example 10000-20000) also using UDP protocol.
actually i am making ip pabx as my final year project…i want to know the use of sip protocol regarding my project…thanks for da favor…
Read up on the protocol:
ietf.org/rfc/rfc3261.txt