You must first determine what IP address it received. To do this, you need to pick up the phone attached to the Line 1 jack and
dial: **** (four asterisks)
then dial: 110 #
and you will be told the IP address of your device (e.g. 192.168.0.100).
For more info, see:
http://www.inphonex.com/support/linksys-pap2t-configuration.php