User guide
Doortello Business
Issue 1.00
Page 32
You want to program a blocking time of 10 seconds. Input:
OK tone
OK tone
Please note!
The connection termination and automatic new seizure of the line after the
blocking timeout is a feature which is available ONLY with EXTERNAL POWER
SUPPLY. If the device is powered only by the telephone line the unit will just
terminate the connection after the time out. In this case you need to press
again the access control button to insert a new code.
If the keypad is used as a access control device you can automatically increase the
blocking time of the keypad after a wrong code input by a here programmed value.
This is used to prevent fraudulent use of the access control keypad. If this feature is
activated with any wrong access code input the blocking time will be increased by
„blocking time“ + („blocking time increase“ x „number of wrong inputs“). The
blocking time will be ret to zero only by dialling a right access code. As default this
feature is deactivated. The blocking time increase can have a value between 00
(deactivate) and 99 seconds. To program the blocking time increase please follow
this procedure:
OK tone
{Blocking time increase in s}
OK tone
You can program a value between
and
. With the value
the blocking time increase feature is deactivated.
Example:
You want that the blocking time of the keypad will increase by 10 s with every
wrong access code input. Input:
OK tone
OK tone
Now, if the blocking time (see also
Key pad blocking time
) was set i.e. at a value of
10 s after the first attempt to input a wrong code the keypad will be blocked for 10
s, after the second attempt for 20s, after the third attempt for 30 s and so on.
Please note!
If you have programmed the blocking time increase feature but you don’t have
defined the maximum number of attempts (see also
Maximum number of
Blocking time increase
