ABB aquamaster Quick Reference Manual page 15

SIM Access Control
This section describes the steps to change the
GSM module's SIM PIN and Access Lock status.
Since SIM Access Lock and SIM PIN are both held
in the SIM they can also be changed by inserting
the SIM into a mobile phone and following the
steps to change it, usually found in phone setting
security menus. However it should be noted that
where the AquaMaster is potted the SIMs may not
be able to be removed and security setup can then
only be done via the AquaMaster.
SIM and PIN access via the AquaMaster first
require that the user has logged in at level 4. Since
these features are related to the security of the SIM
it is recommended that the customer changes the
level 4 password from the default setting. This can
be done via menu 4.
Note. The PIN can only be changed via
the local computer connection. It cannot
be changed via GSM.
Access Lock
When the SIM Access Lock is enabled, the PIN is
required to be sent to the SIM each time the GSM
module is powered up. Once the PIN has been
accepted the SIM can be accessed as normal.
If an incorrect PIN is sent to the SIM then a number
of retries are allowed (SIM dependent, but usually
a further two attempts). If no correct PIN was
received by the module in this time then the SIM
will be locked and can only be recovered with its
PUK (a one-time unlock key that is obtained from
the SIM's service provider).
WIRELESS COMMUNICATIONS...
PIN
The PIN is the password that is needed to access
the SIM if the Access Lock is enabled. If the
AquaMaster detects that the GSM module
requires a PIN for access then it will send the string
that has been set up to use in SIM Password
[>355].
If the AquaMaster has not had the SIM Password
set or if the password is incorrect then the GSM
Module Status [>368] will report 'Waiting PIN' or a
similar message when the GSM module is
powered up.
[If the SIM Password is '-' then no string will be
sent to the GSM module. This is because it is not
possible to have an empty variable string in the
AquaMaster Menu ]
When viewed, the SIM Password will display the
actual PIN string for login levels 4 and above. For
login levels 3 and below it will be displayed as a
number of asterisks (*) - one asterisk for each digit
of the PIN.
Setting AquaMaster to use SIM's existing PIN
Simply change SIM Password to be the PIN of the
SIM card.
AquaMaster will automatically use this to send to
the GSM module each time it powers the module
up. If this is incorrect the SIM will eventually
become locked out.
Using AquaMaster to change SIM's PIN
1. Change SIM Password using the format:
<oldpin>,<newpin>
2. The new PIN can be seen in SIM Password.
3. The GSM module will be re-booted (takes
approx. 1 minute). Once it has rebooted, the
GSM Module Status should report that the
module is 'Ready'.
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