2. GT47/GT48 CONTROL TERMINALS
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LZ T 123 7 605 P1C
2. GT47/GT48 Control Terminals
2.1 Description
Two Control Terminals make up the family; GT47 and GT48, for use in
the E-GSM900/GSM1800 and GSM850/GSM1900 bands respectively.
The Control Terminal has a radio device embedded in it. The GT47
incorporates the GR47 radio device; the GT48 incorporates the GR48
radio device.
Note!
This manual refers to the GT47 and GT48 as Control Terminals. If there
is a difference in the functionality of the Control Terminals the GT47 and
GT48 information will be listed separately.
The Control Terminal is a powerful and flexible device that can be used in
a wide range of telemetry and telematics applications that rely on the
remote exchange of data, voice, SMS or faxes via the GSM cellular network.
Small and lightweight, the Control Terminal has standard connectors and
an integral SIM card reader making it easy and quick to integrate. As well
as providing a standard RS232 serial communication interface the Control
Terminal also has an audio interface allowing an analogue handset to be
connected. When the Control Terminal is integrated into an external
application, a wireless communications system is created.
A typical end-to-end system consists of a micro controller in an external
application communicating, via the Control Terminal, with a remote
terminal or host using the GSM network. The micro controller uses a set of
AT commands to control the Control Terminal, and to set up the end-to-
end communications link, via its 9-way RS232 serial interface.
These Control Terminals are intended to be used by manufacturers, system
integrators, application developers and developers of a wide range of
equipment and business solutions, typically in the following fields:
• Security and alarms
• Vending
• Monitoring and control
• Utilities
• Fleet Management
2.2 Highlights
• Intelligent, versatile GSM/GPRS Control Terminal
• Dual band, EGSM 900/GSM1800 (GT47);
GSM 850/GSM1900 (GT48)
• Customised applications can be embedded and run independently
• Self contained terminal with standard connectors