View source for IHAP DID providers not supporting Calback

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==Question==
=Can I use DID Provider for Callback which do not support Callback?=
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==Answer==
We do not advice you to use Providers which do not support Callback, because if provider do not support Callback it will do not understand hangup code and it can send<br>  back many calls longer than time period is set from GUI at Callback Dial Plan and hangup cause code 236 can not save you from several Callbacks.<br> 
his hangup cause code 236 will save you from several call backs in time period which are set in GUI at Callback Dial Plan. If Provider do not understand hang up cause<br>  code he will send invites more than time period is set from GUI and hangup cause code 236 will not help you from multi Callbacks. Use Provider which <br> support Callback and you will not have problems.<br> 

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=See also=
Information about hangup cause code [http://wiki.kolmisoft.com/index.php/236_Callback_initiation_too_early 236]