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Refer to the user instructions of your home or ofce
switchboard or the telephone service provider for
the most suitable durations of the interruption. The
default duration is 100mS (option ‘Short’) and this du-
ration is already set in the factory.
[ Call barring ] / [ SOS number ]
The [ Call barring ] option allows you to program 4
numbers that may not be dialled and [ SOS num-
bers ] allows you to program exceptions, therefore
numbers that are allowed to be dialled
Example:
Barred number 1 = 06
Barred number 2 = 00
Barred number 3 = 0900
Barred number 4 = 0800
SOS number 01 = 06550
SOS number 02 = 06123456
SOS number 03 = 0900888
SOS number 04 = 0032
this leads to the following situation:
• All numbers starting with 06 are barred with the
exception of the numbers starting with 06550 or
06123456
• All numbers starting with 00 are barred with the
exception of the numbers starting with 0032
• All numbers starting with 0900 are barred with the
exception of the numbers starting with 0900888
• All numbers starting with 0800 are barred
