46
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:
Access the phone screen menu, select “-- reset --" with the up or down arrows
keys.
Step 4:
Enter the encoded MAC address. Once the correct MAC address is displayed in
the LCD screen, press “MENU” button, the device will reboot automatically and
restore to factory default setting.