SMT-i5243 User Guide _37
Volume Control
The user can adjust the volume of a handset, speaker and tone sound.

Volume Control of a Handset

1 The user can adjust the volume in the following
way while making a call via a handset.
2 To increase the volume, press the upper part (+)
of the [Vol] button.
3 To decrease the volume, press the lower part (-)
of the [Vol] button.