Application Control Application Control



This indicates an attempt to use the IAX2 protocol.
Inter-Asterisk eXchange 2 (IAX2) is a VoIP protocol that carries both signalling and data on the same path. It is a communication protcol native to the Asterisk modules. This is in contrast to other VoIP like SIP, H.323 and the Media Gateway Control Protocol which uses an RTP stream to transfer data.