Hi, all... I am new in yeastar and voip as a whole and in my company under unforeseen circumstances I found myself having to expand and work on this field. Few days ago there was a request by one of our clients to upload the new greeting to their s100 system. by default, all calls were routed to the extension number(reception) and everything was still working fine. So I had to route all incomings to the IVR, where they will go through this greeting, I tested and everything was ok... There was the problem the recording so I took it down and routed all incoming calls back to default "Extension", everything test is passed except the when the HQ dials in. This company has the HQ in another country. All calls go through this system well except from HQ, does anybody has an idea of what I am missing? Thanks.