How to enter default gateway and DNS into cfg file


I’d like to find out how to enter the Default Gateway and DNS servers into a CFG file. I’d like the file to reside on my TFTP server so it will automatically enter the info into the phones.

The phones are Polycom IP320’s and IP550’s. I’m running them with a static IP. I do realize that if I ran them with DHCP it would happen automatically. I’d rather run them with a static IP.

Thank you,