Widex B32 User Instructions page 9

Note: The magnetic field in some telephones is
inadequate, in which case the "M" position should
be used.
"MT" (microphone+telecoil): If you want to
listen both via the microphone and the telecoil,
place the switch in mid-position "MT" (e.g. when
watching TV while still wanting to hear the door-
bell, telephone, or other persons speaking).
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