Using the Telephone
Key Lock 
You lock the cordless handset dialling buttons. While locked, the buttons cannot be used and therefore calls cannot be made. Incoming calls can be answered while the key lock
is ON. When the key lock is ON, the menu icon 
changes to 
.
When the key lock is ON, emergency calls (p. 68) cannot be made until key lock is cancelled.
Key Lock ON
| Press and hold | |||
| JOYSTICK directly | |||
(Standby Mode | for more than | |||
2 seconds. | ||||
Display) | ||||
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Key Lock OFF
Press and hold JOYSTICK directly for more than 2 seconds once again.
Telephone System
27