Siemens AC75 Manuel D’Utilisation

s

AC75_ATC_V01.002

Page 124 of 569

10/30/06

Confidential / Released

The AT Commands described in this chapter allow the external application to determine various security related

settings. 

 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 

 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 

for further detail. 

Test Command

AT+CPIN=?

Response(s)

OK

Read Command

AT+CPIN?

Response(s)

OK 

ERROR 

Write Command

[, 

]

Response(s)

OK 

ERROR 

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

GSM 07.07