My UCMs is in Switch mode.
I’ve not set up any LDAP and IAX configuration before as one of the personnel from HQ came to teach us how to use Grandstream but he only went to the seminar talk and only manage to capture some of the basic functions of Grandstream.
He only gave us information on how to set up extensions, VoIP trunks, Outbound routes, SIP settings, RTP settings, Network settings and DDNS settings.
I faced lots of problem when trying to make the system work but still have to thanks for the help from all the forums GURUs, I managed to get some of the things worked.
And I need to mention some things, our products are not using any of the Grandstream IP Phones, we are integrating something like those IP intercom door system with Grandstream UCMs. Thus, I think LDAP would not work for this case, I could try IAX configuration. Is it possible to point some direction of using IAX?