Hi, I'm having a strange issue at the moment. On one of my setups, If i make a call from ext 103 to a number in dubai 0097, the call works without any issues. If I make the same call from any other phone I get no line ringing or audio. Now I've got the wireshark logs, but there not telling my this is occurring unless I'm missing something. I'd be grateful if someone could look at this just to see if I'm missing any thing. P.S Ext 103 is an Aastra phone provisioned by 3CX, per all the other phones (which are a mixture of Snom and Aastra) I've tried using and settings different codex on both the PBX and phones, but with no luck. The system is not in a NAT - and is fully open to the internet. All other calls to every other number I called work fine from all phones.