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A proper login onto GSM/GPRS network requires the basic SIM card information and
sometimes the information about APN, to which the module will be login to make a
GPRS transmission. The basic parameters are as follows:
In the General group:
SIM card PIN number
You should enter a PIN code for a SIM card, which is to be placed in the
module (until the card has not been set in the mode enabling its use without a
PIN code).
GPRS usage
Yes - if you want to use a SMS messaging and a GPRS packet transmission
No - if the module has to operate in a SMS mode only.
In the GPRS group (it is visible only if the GPRS usage parameter is set to Yes):
APN name
You should enter the name of APN, which will be used in the GPRS
transmission.
APN user name
You should enter the user name (if required by the network operator).
APN login password
You should enter the user’s access password (if required by the network
operator).
The above given parameters are the only ones required for a proper login the module
onto a GSM/GPRS network. Note that a module configured in such basic manner has
no possibility to send information. This means, that after checking a network login
process you should configure the remain module parameters to enable the required
use of the module.
5.3. Inserting SIM card
One of basic requirements for a proper operation of the module is a proper placement
of the SIM card delivered by the GSM network operator. The network is used for SMS
messaging and/or GPRS packet data transmission.
It is recommended to insert a SIM card while a supply voltage is off, so in the case of
the MT-703 module means not only disconnecting battery and USB cable but also
waiting
a time till the module is not active anymore. The SIM card can be placed in a
holder before the initial setup is done. However, you should remember that after two
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