I have an IP-PBX system form Planet IPX-2500 which OS is based on asterisk. The system is up and running and all the extensions are working fine. My problem is that setting up VOIP Trunk. If i enter the details in VOIP trunk setting i cannot register it on sip server of my provider. My provider has setup a softphone called linephone for connection testing which works fine and i can make all the calls.
Here is the linephone setting done by my service provider and here is the voip trunk setting page of my PBX
and it shows the setting i entered but it doesn’t work.