Grandstream Networks GXV3370 User Manual page 54

Click on to remove Conf Bridging.
Click on to Mute conference.
Click on to Unmute.
Click on to lock this conference room so that other users cannot join it anymore.
CEI (Conference Event Indicator)
If CEI is enabled, Events like members joining/Leaving the conference, Invitation sent, Mute/Unmute ... will be displayed in the
call screen as the examples shown below:
Member joined
Member left
Figure 84: Conference Bridge
Figure 85: Member joined conference Event