We have a customer with h323 videophones who wish to call one of our extensions directly. So I am trying to find out whether it's possible to call a gatekeeper endpoint from an external h323 video endpoint (not registered to this GK). Or to simplify my question, is it possible to call GK extensions without a registartion? If so, in what format the call would be initiated, is it extension@gatekeeper_ip?
Thanks in advance.