Siemens HC15 User's Guide download pdf (Page 19)

Getting Started with HC15

3.2 Switching on the HC15

HC15_startup_v02 Page 19 of 36 2007-2-16

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3.2 Switching on the HC15

The HC15 can be started by pressing the IGT key of the DSB75. Please wait approximately 2 seconds

before using the module, for example before entering AT commands.

3.3 Switching off the HC15

To shut down the HC15 module, enter the AT^SMSO command. This enables the ME to save all data

and perform an orderly shutdown.

The HC15 module can also be switched off by using the IGT line as described in [2], Section AT^SCFG

and in [1], Section "Configuring the IGT Line for Use as ON/OFF Switch")

3.4 Registering to the Network

Make sure to operate the HC15 always with the UICC card inserted in the DSB75 card reader and a

valid SIM PIN entered. This is because most AT commands require SIM PIN authentication.

Write command: AT+CPIN=<pin>[, <new pin>]

AT^SMSO

The ME switches off.

AT+CPIN?

+CPIN: SIM PIN

AT+CPIN=“1234“

AT+CPIN?

+CPIN: READY

Entering the SIM PIN.

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Siemens HC15 User's Guide Page 19