Figure 37: Gxv3275 Call Mute - Grandstream Networks GXV3275 User Manual

MUTE
During an active call, press the MUTE softkey on the bottom of the screen to mute the call. The mute icon
will be displayed in the status bar on the top of the screen. Press the UNMUTE softkey on the
bottom of the screen to unmute the call.
TURN ON VIDEO DURING AUDIO CALL
Users could establish audio call first and then turn on video or accept video request during the call if the
other party supports video call as well.

Turn on video during audio call
During an active audio call, on the call screen, tap on "More" and select "Video On", a video request
will be sent to the other party.
Firmware Version 1.0.1.20

Figure 37: GXV3275 Call Mute

GXV3275 User Guide Page 54 of 146