If the PBX is deployed behind a NAT (e.g., a router), NAT settings must be configured for external accessibility.
NAT Enabled: Activates NAT traversal support.
External IP: Set this to your static public IP. (If dynamic, use a DDNS service).
Local Network: Define internal network ranges.
ADD: you can add more than one local network.
- Note: For remote extensions, enable NAT in the extension settings as well.