420HD IP Phone for Microsoft Skype for Business
User's Manual 38 Document #: LTRT-11898
5.12.3 Adjusting Handset Volume
You can adjust the volume of the handset during a call or when making a call. After changing the
volume, the newly adjusted level applies to all subsequent handset use.
Ø To adjust handset volume:
1. During a call or when making a call ensure that the handset is off the cradle.
2. Press the VOL or VOL key; the Handset Volume bar is displayed on the screen.
3. Press the VOL or VOL key on the keypad. After adjusting, the Handset Volume bar
disappears from the screen.
5.12.4 Adjusting Speaker Volume
You can adjust the volume of the speaker only during a call. After changing the volume, it applies
to all subsequent speaker use.
Ø To adjust the speaker volume:
1. During a call, press the speaker key.
2. Press the VOL or VOL key; the Speaker Volume bar is displayed on the screen.
3. Adjust the volume using the VOL or VOL key. After you finish adjusting the volume,
the Speaker Volume bar disappears from the LCD.
5.12.5 Adjusting Headset Volume
You can adjust the volume of the headset only during a call. After changing the volume, it applies
to all subsequent headset use.
Ø To adjust the headset volume:
1. During a call, press the headset key.
2. Press the VOL or VOL key; the Headset Volume bar is displayed in the LCD.
3. Adjust the volume using the VOL or VOL key. After adjusting the volume, the
Headset Volume bar disappears from the LCD.
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