FortiVoice Gateway units require Domain Name System (DNS) servers for features such as reverse DNS lookups. Your ISP may supply IP addresses of DNS servers, or you may want to use the IP addresses of your own DNS servers.
For improved FortiVoice Gateway performance, use DNS servers on your local network.
The System > Network > DNS tab lets you configure the DNS servers that the FortiVoice Gateway queries to resolve domain names into IP addresses.
- Go to System > Network > DNS.
- In Primary DNS server, enter the IP address of the primary DNS server.
- In Secondary DNS server, enter the IP address of the secondary DNS server.
- Click Apply.