Panasonic Toughbook CF-18BCAGCMM Operating Instructions Manual page 17

GPRS AT commands
To transmit data via GPRS the application software uses a PPP stack. Windows uses it as a
part of a modem driver. In Windows these drivers are part of the Dial-up network.
However, application software which does not use the Dial-up network, can establish a PDP
context by executing a series of AT commands. Of course, you may also manually type
these commands using any terminal program. Afterwards the PPP stack is activated.
Discrete PDP context activation
Entering the PIN (AT+CPIN)
To be able to attach to the GPRS services your computer must be registered to the GSM
network, i.e. PIN authentication must have been done during the current session. You
have two ways to do so:
If the used SIM card is unlocked, the terminal or mobile will automatically log on to the
network without requesting SIM PIN1.
If the SIM card is locked you can use any terminal program to enter the PIN. The terminal
program should be properly connected to GSM/GPRS modem and configured for 8
Databits, No Parity, 1 Stopbit, flow control and the recommended bit rate of 115200 bps.
IMPORTANT: When PIN authentication has been successful, close the terminal program
to free the communication port. To enter the PIN use the AT+CPIN command.
Example: AT+CPIN=1234 <RETURN>
OK
Now, quit the terminal program.
Defining a PDP context (AT+CGDCONT)
In order to activate a PDP context with the dial up network, a PDP context needs to be
defined before. This means, that the computer needs to inform the network about certain
parameters, so that the context will be activated correctly. The PDP context definition can
be done in several ways:
If [Extra Settings] of the modem properties have been filled in, the CID is known (
page 3, 7). In order to activate the PDP context with the predefined values,
*99***<cid># must be selected as the phone number entry. However, if *99# is se-
lected, the computer will ignore the predefined values and activate the PDP context
with the default values.
The PDP context may also be defined manually via a terminal program (115200 Baud,
8 Databits, No Parity, 1 Stopbit, flow control). Start the terminal program. Define the
PDP context using the "AT+CGDCONT" command:
Example: AT+CGDCONT=1,ip,internet.t-d1.de <RETURN>
Close the terminal program when finished to free the communication port.
17