Unify OpenScape CP400 - Deactivate the ringer; Activate alert tone

60 Setting up the phone
Deactivate the ringer
If you do not want to be disturbed by the phone ringing for an incoming call, you
can switch the ringer off.
Deactivating
*
Press and hold the key until the "ringer off" icon appears.
Activating
*
Hold down the key until the "ringer off" icon goes out.
Mute active ringer
* You can mute the active ringer for an incoming call and only for that call. Long
press the key while the phone is ringing and only the active ringer is muted. Rin-
ger mode is not changed.
If you want to change the ringer mode, see the section ”Deactivating”  page 60
and ”Activating”  page 60.
Activate alert tone
You can turn the ringer off and select a short alert tone instead.
* Hold down the key until the notification and icon for "Activate alert tone" appears
on the display.
Ringer off
Ringer on
Alert tone