IAX2 Call rejected, CallToken Support required
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The reason to the hassle above is due to Asterisk has upgrade their IAX2 security to mitigate denial of service attacks and there is a fix for this:
In /etc/asterisk/iax.conf in [general] section add:
calltokenoptional=0.0.0.0/0.0.0.0 requirecalltoken=no
Restart Asterisk.
