Functions
INSYS ISDN TA 4.0
9.8
Security Callback
The Security Callback function enables the called INSYS ISDN TA 4.0 to perform an
automatic call back to a configured number. If an ISDN device tries to establish a
data connection to a remote INSYS ISDN TA 4.0, the called INSYS ISDN TA 4.0
compares the phone number of the calling party with the entries of its "Access
table". If the phone number matches with an entry, the number, which is in the
entry of the callback number, will be called back after the callback time has
expired. Otherwise, the call will be rejected. The INSYS ISDN TA 4.0 performs only
one callback attempt.
Security Callback is disabled in default setting.
Configuration with HSComm
In order to enable Security Callback, activate the checkbox "Callback"
(Figure 7, page 35, position 24) in the "Safety functions" panel on the
"ISDN" tab. Enter the phone number, which is to be dialled by the INSYS
ISDN TA 4.0 in the adjacent field.
Enter the Callback time for security callback (pause between identifying
the caller until callback) in seconds into the respective field in the "Safety
functions" panel on the "ISDN" tab (Figure 7, page 35, position 24).
In order to disable Security Callback, deactivate the checkbox "Callback"
(Figure 7, page 35, position 24) in the "Safety functions" panel on the
"ISDN" tab.
Configuration with AT commands
In order to enable Security Callback, use
the command
AT**CMDS2=40
Enter the phone number, which is to be
dialled by the INSYS ISDN TA 4.0 when
calling back, using the command
(Enter the prefix for accessing an outside
line when operating at a PABX.)
AT**CASNR=<number>
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