SIP vs IAX
From TD-er's Wiki
Revision as of 10:47, 23 January 2007 by 82.161.30.84 (talk)
IAX and SIP are two different protocols for use with VoIP.
The main advantage of IAX, compared to SIP, is its ability to operate behind a NAT-router. IAX uses only 1 UDP connection for both control- and data-traffic. It is also possible to combine more than one channel (conversation) over this connection. This means only 1 (UDP) port has to be forwarded in the NAT-router to the Trixbox. IAX(2) uses a single UDP port 4569, the obsolete IAX1 protocol used port 5036.
Links
- More on IAX versus SIP
- IAX/IAX2 Detailed description of the IAX/IAX2 protocol.
- Internet draft on IAX2 Whitepaper on IAX2
