Topic3CX & VoIP →
Simple definition
Protocol that helps a client know their public address and behaviour NAT.
Technical definition
Protocol that helps a client know their public address and behaviour NAT. In a business environment, this mechanism usually integrates with other services to facilitate some real-time communications behind a router NAT.
What is it used for?
facilitate some real-time communications behind a router NAT.
Practical example
a customer VoIP discovers the public address visible from the Internet.
Common issues
- NAT or firewall blocking signage or media
- parameters SIP/RTP inconsistent
- bad address announced to correspondents
Key takeaway: Always adapt the diagnosis to the product version and the architecture actually deployed.