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SMT-i5243 User Guide _39
Volume Control of Ringing Sound
1
To increase the volume of the ringing sound,
press the upper part (+) of the [Vol] button while
the bell is ringing.
2
To decrease the volume of the ringing sound,
press the lower part (-) of the [Vol] button while
the bell is ringing.
By pressing the [Vol] button in standby mode, the user can also adjust the key
tone volume.