<ul><li>Building a Python SIP Softphone involves connecting sockets, audio, and protocol rules into a real-time application.</li><li>The SIP protocol itself is defined in RFC 3261, and building a robust softphone requires honoring the rules in that document.</li><li>SIP messages are stateless and flow over UDP, which means your softphone must handle the state of calls and handle repeated or out-of-order messages.</li><li>Matching incoming 200 OK responses requires comparing against existing transactions in the SIP stack.</li></ul>

I’m Doing It…I’m Building a Python SIP Softphone

Discover more