ATS Maximus MCJ2000 Series, Справочное руководство

Страница: 202 / 214

D-4 Maximus Reference Manual MANU-MAXIMUS-02
Revision-02
Manually Configuring a GSM Terminal Appendix D: GSM/GPRS Setup
Manually Configuring a GSM Terminal
If your provider is not preconfigured in the terminal, you must configure the GSM terminal.
• Enable PPP
• Set up a provider peer configuration file
• Set up provider authentication
Enable PPP
PPP can be selected from the terminal’s setup menu as well as enabled at the command-line
level.
The underlying networking system that manages a cellular data connection is the Point-to-
Point Protocol (PPP). This system handles connection dialing, authentication, data rate
negotiation, and the core data exchange process. The PPP system needs some basic
information in order to interact with the hardware and communicate with the end server. This
information is stored in peer files and chat scripts in these directories on your terminal:
• /etc/ppp/peers
• /etc/ppp directories
To enable PPP, log on to the terminal and use the following command:
/ # echo pppEnabled = 1 > /dev/atsconfig
To disable PPP, log on to the terminal and use the following command:
/ # echo pppEnabled = 0 > /dev/atsconfig
You can also enable and disable PPP using the setup menu on the terminal.
Set up a Provider Peer Configuration File
When PPP is enabled it automatically loads the peer configuration file located in the /etc/ppp/
peers/peer directory. This file is actually just a symbolic link pointing to the intended PPP peer.
To configure the PPP for a new service provider, modify by modifying this link.
For example, to set up a clock to use T-Mobile as the provider we see the following in our
peers directory, go to the peers directory:
/ # cd /etc/ppp/peers
Then, run the –sf option to the ln (link command) that identifies T-Mobile as the provider. Note
that you can also set the provider using the Setup Menu on the terminal.
/etc/ppp/peers # ln -sf t-mobile peer