SIP vs IAX | Difference between SIP and IAX

This page compares SIP vs IAX and mentions difference between SIP and IAX. These are protocols used in Voice Over Internet (VoIP).

Specifications SIP IAX
Full Form Session Initiation Protocol Inter-Asterisk Exchange
Utilization of Bandwidth It is less efficient in utilization of bandwidth. It is more efficient in utilization of bandwidth.
Protocol It is plain text protocol. It is binary protocol.
Robustness It is less robust. It is more robust.
Extension It can be extended. It has mechanism for extension. It can not be extended. It does not have extension mechanism.
Usage It is more popular in usage perspective. It is less popular in usage perspective.
Resource exhaustion attack It is not vulnerable against such attack. It is more vulnerable against such attack.

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