Huawei FT2260 Owner's Manual page 16

The volume is too loud.
You can adjust the volume using your telephone connected to the Home Phone
Connect device. Four volume levels are available, with level 1 being the softest and
level 4 the loudest. The default setting is level 4.
1.
Take the phone off the hook so you can hear the dial tone and verify that
telephone service is available.
2.
Press # # 1 to adjust the volume.
3.
Press keys 1 to 4 to select the desired volume.
4.
After selecting the desired volume, press the * key to save it. If you hear a
single confirmation tone, you have successfully set the volume level.
Note: If you hear a double tone you have pressed an incorrect key. The system will
return to the off-hook state, and you can try adjusting the volume again when you
hear the dial tone.
How to set the TTY mode?
Enter the keys # # 5 6 * n # to set the TTY mode.
n=0: TTY off mode. The standard voice speaking mode and the listening mode.
This is the default setting.
n=1: TTY full mode. Transmit and receive the TTY characters.
n=2: VCO mode. Receive TTY characters but transmit by speaking into the
speaker.
n=3: HCO mode. Transmit TTY characters but receive by listening to the receiver.
Version: V100R001_02 Part Number: 31010DJH
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