user manual
Grandstream Networks, Inc.  GXP21xx User Manual  Page 20 of 41 
                 Firmware version: 1.0.1.66         Last Updated: 05/2011 
Configuration Guide 
The  GXP21xx  can be configured in two ways. Firstly, using the Key Pad Configuration Menu on the phone; 
secondly, through embedded web-configuration menu. 
CONFIGURATION VIA KEYPAD 
To enter the MENU, press the round button. Navigate the menu by using the arrow keys: up/down and left/right. 
Press the OK button to confirm a menu selection. The phone automatically exits MENU mode with an incoming 
call, the phone is off-hook or the MENU mode if left idle for 20 seconds. 
Press the MENU button to enter the key the Key Pad Menu. The menu options available are listed in table 12. 
Table 12: Key Pad Configuration Menu 
Item  Description 
Call History 
Displays histories of answered, dialed, missed, and transferred and forwarded 
calls 
Status 
Displays the network status, account status, software version, MAC-address and 
hardware version of the phone 
Phone Book 
Displays the phonebook and downloads phonebook XML 
LDAP Directory 
Displays the LDAP directory and downloads directory 
Instant Messages 
Goes to instant messages 
Direct IP Call 
Dials IP address for direct IP call 
Preference  Press Menu button to enter this sub menu including: 
•  Do NOT Disturb 
DND (Do Not Disturb) function could be turned on or off in the “Do Not 
Disturb” menu. 
•  Ring Tone 
Choose different ring tones in the “Ring Tone” menu. 
•  Ring Volume 
Press Menu button to hear the selected ring volume, press “←” or “→” 
to hear and adjust the ring tone volume. 
•  LCD Contrast 
Press “←” or “→” to adjust the LCD contrast. 
•  LCD Brightness 
Press “←” or “→” to adjust the LCD brightness for active/idle screen. 
•  Download SCR XML 
The phone will download the custom idle screen if available. 
•  Erase Custom SCR 
Custom idle screen will be erased and will be replaced with default 
logo. 
•  Display Language 
You can choose English, Simplified Chinese, Traditional Chinese, 
Korean, Japanese, Italian, Spanish, French, German, Portuguese, 
Russian, Croatian, Hungarian, Polish, Slovenian which are built in the 
phone. Users could select Automatic for local language based on IP 










