Siemens OPTIPOINT 420 ECONOMY 사용자 설명서

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Making Calls – Basic Functions
33
Step by Step
Telephone settings
Adjusting the ringer volume
u
 or 
v
Press one of the keys when the telephone is idle.
 
:
Confirm.
u
 or 
v
To increase/decrease the volume (1 ... 8): keep pressing 
the keys until the desired volume level has been 
reached.
:
Save.
Adjusting the ringer pitch
u
 or 
v
Press one of the keys when the telephone is idle.
>
 
 
:
Select and confirm.
u
 or 
v
Changing the pitch (1 ... 16): keep pressing the keys un-
til the desired pitch has been reached.
:
Save.
Adjusting the display contrast
The display has four contrast levels that you can set ac-
cording to your light conditions.
u
 or 
v
Press one of the keys while the phone is idle.
>
 
 
:
Select and confirm.
u
 or 
v
Change the display contrast (1 ... 4). Press the key re-
peatedly until the desired level is obtained
:
Save.
Modifying the key labelling contrast
u
 oder 
v
Press one of the keys, when the telephone is in an idle 
state.
>
 
 
:
Select and confirm.
u
 oder 
v
Modify contrast (1 ... 4). Press the keys as often as nec-
essary until the required contrast is set.
:
Save.
Ringer volume?         >
Ringer pitch?          >
Display contrast?      >
Label contrast?        >