Foma SO903iTV, Manual

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106
Sound/Display/Light Settings
Setting the Poor Signal Quality Alert
<Quality alarm>
Default OFF
You can set to inform you with alarm of the possibility of the call being disconnected
during a voice call due to the radio wave condition.
1
From the Menu, select [Settings] → [Call] → [Call quality] → [Quality alarm] and
press .
[High] : Sound a high alarm tone.
[Low] : Sound a low alarm tone.
[OFF] : Do not sound an alarm tone.
2
Select the type of alarm tones and press .
The Quality alarm is set.
● If the radio wave condition becomes weak suddenly, the call may be disconnected with no alarm.
Setting Earphone Only for the Ring Tone
<Earphone>
Default Earph.+speaker
You can set the position where the ring tone sounds when the Flat-plug Earphone/
Microphone with Switch (optional) is connected to the FOMA terminal. The other tones,
such as the Alarm, Schedule alarm, and Booking alarm tone also sound from the position
you set for the ring tone.

Even if [Earphone] is set, the ring tone sounds from both the earphone and the speaker if no operations are
made for about 20 seconds after it starts sounding.
1
From the Menu, select [Settings] → [Call] → [Earphone] → [Earphone] and press .
[Earphone] : The tone sounds only from the earphone.
[Earph.+speaker] : The tone sounds from both the earphone and the speaker.
2
Select [Earphone] and press .
The tone sounds only from the earphone.