[Asterisk-video] How to find out if an incoming call has h324m support

[FastAgi FastAgi]

Hi,
I installed h324m support for asterisk, and it works great with phones
supporting 3g video calls.
I want to be able to distinguish phones that don't support 3g video calls,
send them to another context in the dialplan, and make that a regular voice
call.
Is there any way to do that?

Thanks,
Or Agam
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