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AC75 AT Command Set
5. Security Commands
s
AC75_ATC_V01.002 Page 124 of 569 10/30/06
Confidential / Released
5. Security Commands
The AT Commands described in this chapter allow the external application to determine various security related
settings.
5.1 AT+CPIN PIN Authentication
AT+CPIN controls network authentication of the AC75.
The read command returns an alphanumeric string indicating whether or not network authentication is required.
The write command allows the AC75 to store the entered password. This may be for example the SIM PIN1 to
register to the GSM network, or the SIM PUK1 to replace a disabled SIM PIN1 with a new one, or the PH-SIM
PIN if the client has taken precautions for preventing damage in the event of loss or theft etc.
If no PIN1 request is pending (for example if PIN1 authentication has been done and the same PIN1 is entered
again) AC75 responds "+CME ERROR: operation not allowed"; no further action is required.
Each time a password is entered with AT+CPIN the module starts reading data from the SIM. The duration of
reading varies with the SIM card. This may cause a delay of several seconds before all commands which need
access to SIM data are effective. See Section 23.1, Restricted access to SIM data after SIM PIN authentication
for further detail.
Syntax
Test Command
AT+CPIN=?
Response(s)
OK
Read Command
AT+CPIN?
Response(s)
+CPIN: <code>
OK
ERROR
+CME ERROR: <err>
Write Command
AT+CPIN=<pin>[, <new pin>]
Response(s)
OK
ERROR
+CME ERROR: <err>
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last
GSM 07.07 - + + + + + + - + -
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