Ericsson DT59C - Manual (Page 50)

During Calls
DT590 50
During Calls
Volume control
Use the volume keys to adjust the volume in the earpiece. See
section “ Description ” on page 11 for the location of volume
controls.
To turn the microphone on or off during a call, see section “
Mute
microphone ” on page 51.
Earpiece volume
During a call, the volume keys affect the earpiece volume.
Press the volume controls to adjust the earpiece volume.
The volume level is set and maintained until you adjust the volume
again.
Loudspeaker volume
During a handsfree call, the volume keys affect the loudspeaker
volume.
Press the volume controls to adjust the loudspeaker volume.
The volume level is set and maintained until you adjust the volume
again.