@Kevin_Z Hi, Thank you for your reply. I too, got the error message of conflicting ports when trying to set it up, just with port 5060 not 1701 or any other aforementioned port. So I was never able...

@Kevin_Z After reading through the related threads I tried both, but neither disabling UPnP and restarting nor removing the ethernet cables during reboot helped me.

@Kevin_Z Hi, I'm having the same Problem on Port 5060 for SIP on a C80 v1 , latest official fw. 5060 can't be used as internal or external port in any forwarding I've tried disabling everything under...