The following procedure will reset the ATA to its default config:
a) Take the phone off hook.
b) The red button on the top of the ATA-186 will illuminate.
c) Press the illuminating red button on the ATA and dial 322873738#. (The numbers spell FACTRESET# on the telephone)
d) Voice prompt will ask you to dial * to save changes you have just made.
e) Press * on your phone’s keypad.
f) Hang up the phone.
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To get to the ATA186 web configuration page, go to »ipaddress/dev — So if your router assigned your ATA186 an IP address of 192.168.1.100, you would go to »192.168.1.100/dev