I found this information out there on the interwebs somewhere, but forgot to save the website of the source. This information should work for all Linksys/Sipura ATA devices.
**** "Active IVR Menu"
You will hear "Sipura configuration menu". Enter option followed by the pound key.
110 "Check WAN IP Address"
It will announce the IP address of the WAN port.
120 "Check WAN Network Mask"
It will announce the Network mask of the WAN port.
130 "Check WAN Gateway"
It will announce the gateway of the WAN port.
140 "Check MAC Address"
It will announce the MAC address of the Sipura SPA-2100.
150 "Check Firmware Version"
It will announce the firmware version running on Sipura SPA-2100.
160 "Check Primary DNS Server IP Address"
It will announce the Primary DNS Server IP address
170 "Check WAN Port Web Server Port"
It will announce the WAN port web server port.
210 "Check LAN IP Address"
It will announce the IP address of the LAN port.
100 "Check WAN internet Connection Type"
It will announce the WAN Internet Connection Type.
101 "Set WAN Internet Connection Type"
Enter "0" to use DHCP, "1" to use Static IP, or "3" to use PPPoE.
111 "Set WAN Network Mask"
Enter IP address using numbers on the telephone keypad. Use the * (asterisk) key when entering a decimal point. Note that the WAN Internet Connection Type must be set to "Static IP", otherwise you will hear "Invalid option".
121 "Set WAN Gateway"
Enter network mask using numbers on the telephone keypad. Use the * (asterisk) key when entering a decimal point. Note that the WAN Internet Connection Type must be set to "Static IP", otherwise you will hear "Invalid option".
131 "Set WAN Gateway"
Enter IP address using numbers on the telephone keypad. Use the * (asterisk) key when entering a decimal point. Note that the WAN Internet Connection Type must be set to "Static IP", otherwise you will hear "Invalid option".
161 "Set Primary DNS Server IP Address"
Enter IP address using numbers on the telephone keypad. Use the * (asterisk) key when entering a decimal point.
7932 "Enable/Disable Wan Port Web Server"
Enter "1" to enable, or "0" to disable
732668 "Reboot the Sipura SPA-2100"
The Sipura SPA-2100 will reboot after you hang-up the phone.
73738 "Factory Reset"
Enter "1" to confirm, or "* (asterisk)" to cancel. Sipura SPA-2100 will inform you that the "Option Successful"
877778 "User Factory Reset"
