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HandyTone-386 User Manual Grandstream Networks, Inc.
30
8 Restore Factory Default Setting
Warning: Restore the Factory Default Setting will delete all configuration information of the
device.
Please disconnect network cable and power cycle the unit before trying to reset the unit to factory
default. The steps are as follows:
A. Find the MAC address of the device. It is a 12 digits number located on the bottom of the unit.
B. 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, 000B82004D2A will be encoded to 0002228200433222.
C. To perform factory reset:
1. Press “***” or the LED button for voice prompt.
2. Enter “99” and get the voice prompt “Reset”.
3. Enter the encoded MAC address of the device. A "click" sound will be heard.
4. Wait for 15 seconds.
The device is now restored to the factory default setting.