User's Manual
Grandstream Networks, Inc. GXV3175 USER MANUAL  Page 28 of 60 
 FIRMWARE VERSION 1.0.1.1 Updated : 3/2012 
Figure 29: Call Function Options 
Table 7: GXV3175 Call Function Description 
OPTION MENU  FUNCTION  DESCRIPTION 
PIP  Press to switch videos between the caller and callee   
Hold  Press to hold the call 
Mute  Press to mute/unmute the call 
Volume  Press to increase or decrease volume 
Conference  Press to make 3-way conference call 
Snapshot  Press to take a snapshot of the current video. The 
snapshot will be automatically saved to folder “screenshot” 
in Tools->File Manager 
Video off  Press to switch between Video off and Video on. In the 
screen, the default picture will show instead of the video 
when video is turned off 
Turn up and turn down the video brightness 
Video zoom in and turn out 
DTMF Dial Pad  Press the number and # or * for DTMF 
CALL HOLD 
1. Call Hold:During a call, press “Hold” button to place the call on hold. The line icon will become 
yellow after call hold. The following will be displayed on the screen. (See Figure 30)   










