12 during calls, 1 volume control, 2 loudspeaking (handsfree) – AASTRA DT690 User Manual

Page 66: 3 muting the microphone

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12 during calls, 1 volume control, 2 loudspeaking (handsfree) | 3 muting the microphone | AASTRA DT690 User Manual | Page 66 / 140 12 during calls, 1 volume control, 2 loudspeaking (handsfree) | 3 muting the microphone | AASTRA DT690 User Manual | Page 66 / 140
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