Hello, I would like to use Asterisk with fayn.cz service. They should be using a standard H.323 protocol, but I have no more information about this. They provide a softphone and/or rebranded H.323 telephone, but I don't know any H.323 settings nor if the firmware in the phone is modified. Has anyone tried this successfully? They provide a Prague telephone number reachable from classic telephone network in their free monthly plan, which would be of great use for me, since I have many friends in Czech Republic and it would be very cheap to call to a local prague number instead of international call. Juraj.