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SIP is a protocol for Voice over Internet Protocol or VOIP. SIP is the control channel and you use it to login to the server (once registered calls to a number
by shrubble 3y ago
SIP is a protocol for Voice over Internet Protocol or VOIP.
SIP is the control channel and you use it to login to the server (once registered calls to a number will be sent to your program) and control both sending and receiving calls. The actual audio protocol is RTP, typically 20ms of audio is sent or received per RTP packet.