user manual
Grandstream Networks, Inc.  GXP21xx User Manual  Page 11 of 41 
                 Firmware version: 1.0.1.66         Last Updated: 05/2011 
Using the GXP21xx SIP Enterprise Phone 
GETTING FAMILIAR WITH THE LCD 
GXP21xx has a dynamic and customizable screen. The screen displays differently depending on whether the 
phone is idle or in use (active screen).  
Table 8: LCD Buttons 
Key Button 
Key Button Definitions 
LINE SELECTORS 
Selects the phone line printed on its right-hand side. 
DATE AND TIME 
Displays the current date and time. Can be synchronized with Internet time 
servers. 
LOGO 
Displays company logo name. This logo name can be customized via xml screen 
customization. 
NETWORK STATUS 
Displays the status of the phone and network. It will indicate whether the network 
is down, starting or running (IP address). “## MISSED CALLS” is shown here too. 
STATUS BAR 
Shows the status of the phone, using icons as shown in the next table.  
LINE STATUS INDICATOR 
Displays the name of the account that is in use. Select another account by 
pressing the LINE key on the left side. 
SOFTKEYS 
The softkeys are context sensitive and will change depending on the status of the 
phone. Typical functions assigned to softkeys are: 
•  FORWARD ALL Unconditionally forwards the phone line to another 
phone 
•  MISSED CALL   This option shows up there were unanswered calls to 
this phone. The Missed Calls option shows a list of the 
missed calls 
•  NEXTSCR   Press this button to toggle between idle screen, weather 
and IP Address. 
•  REDIAL   Redials the last number 
•  END CALL   Hangs up phone 










