Operation handset
3 Press the melody key again to confirm.
Handset ring volume
4 
5 
6
g h i j k l m n o
1Press the volume key.
The handset will ring in the current volume.
2Select the desired volume
3Press the volume key again to confirm.
You can turn the ringer volume of each individual handset on or off by simply pressing and holding the ringer on/off key 
in standby.
6.10 Key lock
When the keypad is locked, pressing any key will have no effect during standby (except holding the key lock key).
1 Press and hold the key lock key.
The icon appears on the display and the keypad is locked. 2 Press and hold the key lock key again to unlock the
keypad.
When the keypad is locked and there is an incoming call, you can still answer the call by pressing the line key. During the call, the keypad functions as normal. When the call is ended, the keypad will be locked again.
6.11 Setting the dialling mode
There are two types of dialling modes:
DTMF/Tone dialling (default and most common used) Pulse dialling (for older installations)
To change the mode of dialling:
1 Press and hold the flash key to toggle between dialling modes.
“P” will appear when set to pulse dialling, “T” will appear when set to tone (DTMF) dialling.
After 5 seconds, the unit returns to standby.
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