Difference between revisions of "SIP vs IAX"
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IAX and SIP are two different protocols for use with VoIP. | 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. | + | 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 == | ==Links == | ||
* [http://www.voip-info.org/wiki-IAX+versus+SIP More on IAX versus SIP] | * [http://www.voip-info.org/wiki-IAX+versus+SIP More on IAX versus SIP] | ||
| − | * [http://www.voip-info.org/wiki-IAX IAX/IAX2] | + | * [http://www.voip-info.org/wiki-IAX IAX/IAX2] Detailed description of the IAX/IAX2 protocol. |
| + | * [http://www.cornfed.com/iax.pdf Internet draft on IAX2] Whitepaper on IAX2 | ||
Revision as of 10:47, 23 January 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.
Links
- More on IAX versus SIP
- IAX/IAX2 Detailed description of the IAX/IAX2 protocol.
- Internet draft on IAX2 Whitepaper on IAX2
