AT
Command Set
INSYS Modem 336/56k 4.1 (UL)
Command
Description
AT*N<n>=<nr
>
Permitted numbers for selective call acceptance
Definition of 8 authorized phone numbers, for which modem access is permitted. Only if
the transmitted phone number matches a phone number that was entered in the list will
the modem report RING for an incoming call or will accept the call according to the set-
tings of
ATS0
(the line RI is activated with each call, irrespective of that fact).
The selec-
tive call acceptance is switched on and off with
AT&A
.
AT*Nn=<nr>
<n>
Describes the storage location – range of values: 0..7.
<no>
Permitted phone number consists of numbers and the wild card “*”
for exactly one character. The phone number may not contain sepa-
rators such as brackets or space characters. After they were entered,
the phone numbers are immediately saved in the power fail-safe
memory of the modem.
AT*N<n>=<nl>
The memory
N<n>
allows all phone numbers ending in
<nl>
.
AT*N99=
Deletes all existing entries in the list
AT*N?
Displays all stored entries
Example:
AT*N5=1234
allows all calls ending with
1234
.
E.g.:
0175/999
1234
, 0941/888
1234
, or +4940/777
1234
AT*N1=01234567**
permits all calls from the block of numbers
01234567-00 to 01234567-99
AT*N99=
Delete the list of permitted phone numbers for the selective call answer
The command
AT*N99=
deletes the entire list of phone numbers for the selective call
answer.
AT*N?
Output of the list of permitted phone numbers
AT*N?
activates the output of the entire saved list of permitted phone numbers for the
selective call answer.
AT%N
Output of the last rejected phone number
For active selective call answer (
AT&A1
) , the last phone number, whose call was rejected,
will be displayed.
Note: This phone number is not saved in the power fail-safe memory of the modem.
ATO<n>
Return to online data mode
If the modem is in online command mode, it will return to online data mode. If the mo-
dem is in offline command mode, it will report
ERROR
.
ATO0
Return to online data mode.
ATO1
Before the modem switches to online data mode, a retrain procedure is
provoked.
ATP
Switch on pulse dialing method (deactivated for some models)
Starting with this command, each dial-up is performed with the pulse dialing method,
until an
ATT
or
ATDT
command switches it back to tone dialing.
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July 06
