Figure 5: Gxp2200Ext Status And Version Info - Grandstream Networks GXP2200EXT User Manual

2. After the GXP2200EXT completely boots up, users could press and hold the LEFT key for 3 to 5
seconds. Then the GXP2200EXT status will show. Press any key to return back to normal display.
•
GXP2200EXT Diagnostic Mode
After the GXP2200EXT boots up, press and hold LEFT and RIGHT keys at the same time for 3 to 5
seconds. The Diagnostic mode screen will show on the GXP2200EXT LCD. Under Diagnostic mode, all
the LED will light up in red. Pressing each key will change the corresponding LED to green.
To exit diagnostic mode, press and hold both LEFT and RIGHT keys for 3 to 5 seconds again. The
GXP2200EXT LCD will return to normal display.
FIRMWARE VERSION 1.0.0.14

Figure 5: GXP2200EXT Status and Version Info

GXP2200EXT USER MANUAL Page 12 of 26