We have a new VoIP Phone SPA525G2 with Zen Internet with the public IP address (Static IP) with a new Draytek 2830n router. The issue is, there are no incoming calls but I can make outgoing calls to any number on the phone fine. When you ring the number from your own mobile phone to the IP phone, you can hear it dialling on your mobile but no incoming call or activity on the VoIP Phone.
When I logged into the phone via the interface from the IP address under SIP it says it's registered successfully so I am entering the SIP username and password from the broadband provider correctly including the proxy address and port numbers are 5060.
What configuration am I missing? I have opened ports 5060 on the Draytek and port forwarded them also to the phone private IP address. We only have 1 IP phone.
The Draytek router 2830n does not have VoIP features but someone said you don't have to have a router that has VoIP. Would this be the issue.
May be JorgeM know of this ??