Operating instructions

90 Telephone blocking
Locking the telephone line to prevent misuse
You can prevent unauthorised persons from using your telephone (and the sys-
tem directory) during your absence.
Prerequisite: You have been assigned a personal identification number (PI N)
by the service personnel responsible for your communications system.
Locking the telephone line to prevent unauthorised dialling
u Open the system menu.
> < [ Select and confirm the basic service.
Either:
LM Enter the service code.
Or:
> < [ Select the menu item and confirm.
> < [ Select the menu item and confirm.
then:
o Enter the PIN (code no.).
[ Press this key. If the PIN is correct, it will be confirmed with: "carried out" on the
display.
Enabling the telephone again:
u Open the system menu.
> < [ Select and confirm the basic service.
Either:
LM Enter the service code.
Or:
> < [ Select the menu item and confirm.
> < [ Select the menu item and confirm.
then:
o Enter the PIN (code no.).
[ Press this key. If the PIN is correct, it will be confirmed with: "carried out" on the
display.
As an alternative, however, you can lock your handset against misuse
 Page 89.
Neither of these two locks may be active if you want to place a call.
The PINs for locking the telephone line and for the handset are not identi-
cal.
BASIC SERVICE
PIN / COS?
CHANGE COS
BASIC SERVICE
PIN / COS?
CHANGE COS