People on the forum, here is a collaborative small dishes of mine:

If you are going to use Elastix 2.0, when adding an extension of type IAX2, are likely to have the problem that can not be registered.
The problem is that the parameter "requirecalltoken" by default has no value, and that the extension can be registered must be set to "no."

Regards
Alejandro Zanetti

use calltokenoptional-0.0.0.0 in advanced iax settings (from FreePBX) or in /etc/asterisk/iax_general_custom.conf

after making chnages still it does not work ..

following error message

ERRORS

Settings in /etc/asterisk/iax_general_custom.conf may override these. Those settings should be removed.

pls advise further soln..

regds
Wasi

syedwasi,

it seems that u r using Advance IAX setting module in FreePBX. To use this module correctly, u should first delete any line in /etc/asterisk/iax_general_custom.conf
Open SSH shell command and use nano or vi and delete all the entries in that file.

now, If you open Advance IAX setting module in FreePBX, you should not receive that error message "Settings in /etc/asterisk/iax_general_custom.conf may override these. Those settings should be removed."

then, go to the end of the Advance IAX setting module in FreePBX and add in "Other IAX Settings" calltokenoptional = 0.0.0.0