Gsm Advanced Manual - 7
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7
1. INTRODUCTION
This detailed guide aims at explaining the features available with Contrive
Gsm
.
It supposes you are a bit familiar with GSM and cellular phones.
This guide is not intended to give full details about how GSM or GPRS works.
2. SIM CARD
The SIM card receptacle is intended for 3V SIM cards [GSM 11.12 phase 2+].
The SIM card must be inserted in the cardholder to put the unit into operation.
Make sure that there is no voltage applied to Gsm and follow operating instruction.
2.1
Operating without SIM PIN
The simplest way is to put your SIM card into a cellular phone and program it so it won't ask for
the PIN. The SIM card is 'open' and someone could steal the SIM card, use it and read the
information inside.
2.2
Enter default SIM PIN
Gsm comes with a default PIN = 0000 (four zeroes).
Put your SIM card into a cellular phone and program the PIN using the given number.
2.3
Change default SIM PIN
Using com port and GsmSuite running on Microsoft® Windows® PC you can modify the default
PIN on both Gsm and SIM card. More information at § 13.5
2.4 WARNING
If you insert a SIM card that ask for a PIN number different from that stored into Gsm,
the device will not operate. Turning on Gsm for 3 times having mismatch condition,
SIM card will lock up and you must provide the PUK (PIN Unblocking Key).
