Call features, Table 7: call features – Grandstream Networks GXV3140 User Manual
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GXV3140 USER MANUAL
www.grandstream.com
SOFTWARE VERSION 1.0.0.44
MUTE
1. During a call, the LCD screen will display “Mute”. Press the corresponding FUNCTION button to mute.
2. After the “Mute” button is pressed, the LCD screen will display “Unmute”, when this button is pressed,
the mute feature is cancelled.