Hi all I have been looking through this forum for about an hour without luck, so I'm trying this. I'm using a 3CX system version 10.0.21197.2104 SP3 and have entered a re-register timeout of 300 seconds (in accordance with our provider), but no attempt to re-register is ever going out according to the logs. This results in our provider disconnecting as the registration times out at their end and no incoming calls can be made. We have a static IP, no SIP ALG, but with NAT from outside IP to inside. The outside IP is also stated on the advanced tab of the provider. Anyone have any idea as to what might be wrong ?