Thinklink - Recording
To Record, set the Monitor switch to the left (monitor One).
Set the Source switch to the center or right position. The center position reduces the signal level to the mobile device. This is usually necessary, since the One is usually too loud for most recording devices. You may also find that reducing One's volume level to a 0 to 2 range is necessary during recording, to reduce clipping and distortion.
Note that you can record from a headset microphone by switching the Source switch to the left position. This will connect your headset mic to the mobile device input, rather than connecting One as the audio source. This can be useful for dictating voice to annotate recordings. Note that you must be using headphones that have a built-in microphone to perform this function.