Difference between revisions of "SIP vs IAX"
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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 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. | IAX(2) uses a single UDP port 4569, the obsolete IAX1 protocol used port 5036. | ||
| − | + | SIP uses port 5060 | |
==Links == | ==Links == | ||
Revision as of 15:24, 1 February 2007
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. SIP uses port 5060
Links
- More on IAX versus SIP
- IAX/IAX2 Detailed description of the IAX/IAX2 protocol.
- Internet draft on IAX2 Whitepaper on IAX2
