User Guide
Grandstream Networks, Inc.  GXP User Manual  Page 23 of 38 
  Firmware 1.1.5.15  Last Updated: 12/2007 
Configure 
Press Menu button to display the configuration selections: 
•  Network. 
To enable/disable DHCP.  
To setup IP-address, Net mask and Gateway address 
•  SIP 
To change SIP-server settings for primary account. 
•  Audio 
•  Upgrade 
In this menu setting regarding the firmware server and config 
server can be changed. It also enables the user to make the 
phone attempt to download new firmware.  
•  Factory Reset 
Key in the physical/MAC address on back of the phone. 
Press Menu button to reset FACTORY DEFAULT setting. Do not 
use Factory Reset unless you want to restore factory settings 
 Press ‘←’ to return the main menu. 
Factory Functions 
Press Menu to display the factory function items including 
•  Ethernet Loopback 
Connect a cross Ethernet cable from your “PC” port, and the 
“LAN” port. The test result is displayed on the screen. Use this 
feature to diagnose the state of health of the RJ45 jacks. Press 
Menu button to exit the diagnostic mode. 
Note: Running the Ethernet Loopback mode with a normal 
connection will cause IP loss. 
•  Audio Loopback 
Speak into the handset. If you hear your voice in the handset, 
your audio works fine. 
Press Menu button to exit the mode. 
•  Diagnostic Mode 
All LEDs will light up 
Press any key on the keypad, to display the button name in the 
LCD. Lift and put back the handset or press Menu button to exit 
the diagnostic mode. 
 Press ‘←’ to return to the main menu. 
Reboot 
Press Menu button to reboot the device 
 Display “Exit” 
 Press Menu button to exit the menu 
Exit 
Exit from this menu. 










