User's Manual Part 1
between different SIP accounts. 
Incoming calls through the three accounts will try to use the corresponding line. If this line is busy, the 
green icon for the corresponding line will become red. When a call comes in and the line is busy, the next 
idle line will be used. 
HANDSET, SPEAKER AND HEADSET MODE 
The GXV3175 allows users to switch from handset to speaker or headset by pressing corresponding 
icons shown in Dial Pad (Item 5). If headset is plugged in, the headset icon will be activated to select. 
MAKING A CALL 
There are several ways to make a call. 
1.  By selecting account displayed in idle screen 
Users could press the account area displayed in idle screen to make a call via the selected 
account. 
•  In idle screen, select the registered account by touching the marked area in Figure. 
•  The dial pad will show up with the selected account. 
•  Dial the number and press “Audio Call”/”Video Call” to dial out. Or press “Redial” for the 
last dialed number. 
Figure 17: Making a call by select account displayed in IDLE screen 
2.  By “Phone” in idle screen 
Grandstream Networks, Inc. GXV3175 USER MANUAL    Page 18 of 68 
    FIRMWARE VERSION 1.0.0.32 Updated : 11/2010 










