SIP Tutorial Part 3 – Commands

• INVITE :Invites a user to a call
• ACK : Acknowledgement of the request.
• BYE :Terminates a connection between users
• CANCEL :Terminates a request, or search, for a user.
• OPTIONS :Solicits information about a server’s capabilities.
• REGISTER :Registers a user’s current location
• INFO :Used for mid-session signalling

It would be easy to understand the above commands with an example and will cover this in next blog