Functions
INSYS ISDN TA 4.0
9.9
Selective Call Acceptance
The INSYS ISDN TA 4.0 can be set to accept only calls from phone numbers that
were previously stored. The following commands allow to create a table with up to
10 (5 for FW < 1.027) numbers.
The INSYS ISDN TA 4.0 ignores each incoming call, which does not comply with
one of the table entries. The INSYS ISDN TA 4.0 compares the number of the caller
with each entry of the list. The comparison starts with the last digit of the number
until an entry complies with. If an entry of the table is configured to asterisk (*), the
INSYS ISDN TA 4.0 accepts every incoming call.
The list is empty as default setting.
Configuration with HSComm
In order to enable the selective call acceptance, activate the checkbox
"Access protection" (Figure 7, page 35, position 21) in the "Safety
functions" panel on the "ISDN" tab.
Enter the phone number of the permitted caller (Figure 7, page 35,
position 21) in the adjacent field. If you want to enter further phone
numbers, this is only possible via the AT command set.
In order to disable the selective call acceptance, deactivate the checkbox
"Access protection" (Figure 7, page 35, position 21) in the "Safety
functions" panel on the "ISDN" tab.
Configuration with AT commands
In order to use the selective call acceptance
and define the phone numbers of the
permitted callers in the table acctab, use
the command
Replace <n> with the number of the table
entry here (1 - 10 (5 for FW < 1.027)).
<callno> is the transmitted phone number
of the permitted caller. The maximum
length of the phone number is 20 digits.
Use the asterisk "*" within the phone num-
ber as wildcard. This is used to replace one
or more digits in the phone number to
permit several similar pone numbers.
AT**acctab<n>=<callno>
Example: only the entered number is
accepted
AT**acctab1=0891234567
Example: The INSYS ISDN TA 4.0 accepts
all numbers starting with 089123
AT**acctab1=089123*
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