SIP or IAX2


Which connectivity trunk should we use SIP or IAX2.
My opinion and i am comfortable with IAX2.. It has all the good thing that SIP don’t. SIP requires 5060 port to be open. On the other hand for IAX2 although 4569 port is to be open however IAX2 seems to traverse, even if port 4569 is not .
Moreover IAX2 performs well over firewall.
SIP is widely available is only because is more in use rather than it usability.

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