- 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
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