User Guide
Grandstream Networks, Inc.  GXP User Manual  Page 29 of 44 
       Firmware 1.2.5.3     Last Updated: 03/2011 
Multi Purpose Key X 
These options are used to assign a function to the corresponding multi purpose key.
Options available are:  
1.  “Speed Dial”. 
2.  “BLF” (Busy Lamp Field). This option has to be supported 
on the PBX and it 
indicates the status of the extension. The three possible states are idle 
(green), busy (red), ringing (blinking red). 
3.  “Presence Watcher”. This option has to be supported by a presence server 
and it is tied to the “Do not disturb” status of the phone. 
4.  “Eventlist BLF”. This option is similar to the BLF option but in this case the 
PBX collects the information from the phones and sends it out in one single 
notify message. 
5.  “Speed Dial Via Active Account”. This option will act just like speed dial, but 
based on the current active account. For instance, if the phone is offhook 
and account 4 is active, it will call the configured speed dial number using 
account 4. 
Each function is connected to one of the accounts and has a target user ID.  
Time Zone 
This parameter controls the date/time display according to the specified time zone. 
LCD Backlight Always 
On 
Turn on LCD backlight at all times. Default is No. This option applies to GXP-
1200/GXP-2000 only. 
Time Display Format 
LCD time display in 12 hour or 24 hour format 
Date Display Format 
Choose one of the following formats: 
•  Year-Month-Day 
•  Month-Day-Year 
•  Day-Month-Year 
This option applies to GXP280/GXP285/GXP1200/GXP2000 only. 
Display Clock instead of 
Date 
Choose to display clock or date on LCD. This option applies to GXP-280/GXP-
285/GXP-1200/GXP-2000 only. 










