VoIP Phones - Draytek
Draytek 2850/2930
Problems with registration?
These routers seem to have very short a UDP NAT expiry ?~30sec. The port was closing before the phone re-registered, causing problems with incoming calls not working (as the phone is no longer registered).
Changing to 3600 will help.
Firewall & Security
- You will also want to set up firewall rules, as per the VoIP Firewall page.
- Also see the VoIP Security page for information about securing your VoIP service.