Cisco ATA 186/188 configurationyou need to make sure that you are running the correct SIP firmware on your phone.
Step 1You may first want to reset your unit to factory default setting. To do this, pick up the phone handset attached to the Line 1 jack and press the illuminated red button.
then dial * (asterisk) and hang up.
NOTE: this will completely reset the unit to factory default settings, erasing any values that may already exist!
Step 2Now, again pick up the phone handset and press the red button, then
Dial: 21 #
and you will be told the IP address of your device (e.g. 192.168.0.100).
Step 3Go to any browser equipped computer on your network and enter the address:
Step 4You need to modify only a few parameters from the factory default. They are listed here:
UID0: Enter the 10-digit Clickncall username.
PWD0: Enter the password that you received from the Welcome email.
DisplayName0: Enter the 10-digit Clickncall username.