User's Manual

GXV3275 User Manual
MAKING PHONE CALLS
Grandstream Co., Ltd
Software Version：1.0.0.9 Document Version：0.2
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Figure 38 GXV3275 Call Mute
2. Press the Unmute button to cancel mute.
VOICE CHANNEL SWITCH
1. Tap on the voice icon on the lower left corner of the call screen to switch voice channels.
2. Click again the icon to select other channels. See figure 39.
Figure 39 GXV3275 Switch to Other Voice Channels
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