The Panasonic TGP500 is a WiFi SIP telephone that can be configured through the built in web configuration page.
See the Panasonic TGP500 product page for more info.
Scroll down to the bottom and click Save then reboot the phone.
If the phone will not register, check over the account info page for anything that may be mistyped.
Ensure that:
Your firewall is not preventing your phone from reaching the internet. Please refer to the NAT and Firewall settings page.
If you are still experiencing difficulty connecting, please contact us.