Notes on using voice communications apps – Sony SGPT11 User Manual
Page 44
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Notes on Using Voice Communications Apps
When you use voice communications apps such as those for Internet telephone or voice chat in the following cases, both parties
cannot talk simultaneously. Speak alternately.
A headphone without microphone function is connected to the headphone jack.
Nothing is connected to the headphone jack.
You can talk simultaneously when a headset is connected to the headphone jack.
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