user manual
GXV-3000 User Manual  Grandstream Networks, Inc. 
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8  Restore Factory Default Setting 
WARNING !!! 
Restore the Factory Default Setting will DELETE  all configuration information of the phone. 
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 VoIP service provider. 
Please disconnect network cable and power cycle the unit before trying to reset the unit to factory 
default. The steps are as follows: 
Step 1: 
Press “OK” key to bring up the key pad configuration UI menu, select “System Config”, press “OK” to 
enter submenu, select “Factory Reset” (Please refer to Table 5-1 of keypad flow chart) 
Step 2: 
Key in the MAC address which printed on the bottom of the sticker. Please use the following mapping: 
 0-9: 0-9 
 A: 22 (when pressed 2 twice, the “A” letter will show on the LCD) 
 B: 222 
 C: 2222 
 D: 33 
 E: 333 
 F: 3333 
For example, if the MAC address is 000b8200e395, it should be key in as 
“0002228200333395”. 
NOTE: 
•  If there is digits like “22” in the MAC, you need to type “2” then press “->” right arrow key to 
move the cursor or wait for 4 seconds to continue to key in another “2”. 
Step 3: 
Press the “OK” key again to move the cursor to “OK” button then press “OK” key again to confirm. It 
the MAC address you input is correct, the phone will reboot now. Otherwise it will exist to previous 
keypad menu interface. 










