User manual

48
7. Restore Factory Default Setting
Warning !!!
Restore the Factory Default Setting will DELETE all configuration information of the
device. Please backup or print out all the settings before you approach to following
steps. Grandstream will not take any responsibility if you lose all the parameters of
setting and cannot connect to your service provider.
Step 1:
Find the MAC Address of the device. The MAC address of the device is located
on the bottom of the device. It is a 12-digit number. User can also use Menu
option 10 to find out the phone’s MAC address.
Step 2:
Encode the MAC address. Please use the following mapping:
0-9: 0-9
A: 22
B: 222
C: 2222
D: 33
E: 333
F: 3333
For example, if the MAC address is 000b8200e395, it should be encoded as
“0002228200333395”.
Step 3:
a. Press the MENU button for Key Pad Menu options.
b. Press Up or Down button to go through the menu, and press the MENU to
select “Config”.
c. Press Up or Down button to go through the menu, and press the MENU to
select “Factory Reset”.
d. Press Up button and enter the encoded MAC address.
e. Press the MENU button twice.
f. Wait for phone reboot automatically and restore to factory default setting.