user manual
GXV-3000 User Manual  Grandstream Networks, Inc. 
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NOTE: 
•  This feature requires the phone to be configured correctly in the “VoiceMail User ID” field the 
VM portal access number, also requires the Server to support this. 
4.3.11  Mute / Delete 
When in conversation with an ACTIVE LINE, pressing “MUTE/DEL” will mute the conversation, 
which means you can hear the other party but the other party cannot hear you. Pressing the button 
again will resume the conversation. When pressed, the red icon (muted microphone) will blink in the 
LCD to remind call is muted. 
When dialing a number or during the Key Pad “MAIN MENU” configuration mode, press 
“MUTE/DEL” will delete the last entered digit. 
When phone is idle, press the Mute/Delete key will function as a shortcut to Enable/Disable the DND 
(Do Not Disturb). When enabled, the red icon (Do Not Disturb) will blink in the LCD to remind user 
the DND is activated.     
When there is an incoming call, press the Mute/Delete key while phone is ringing will REJECT the 
incoming call. The server will tell caller the user is busy and/or forward the call to Voice Mail if server 
support this feature and configured properly.   
4.3.12  CAMERA BLOCK 
User can press CAMERA BLOCK key to Disable/Enable the video sending out when in video call. 
If no video call wanted (privacy), user can press this button and make Audio Only call. When 
CAMERA BLOCK key is pressed, a red blocked camera will blink in the LCD to remind that the call 
is not in video mode and the camera is blocked. 










