GM47R5/GM48R5 RADIO DEVICES
7
LZT 123 8020 R1B
2 GM47r5/GM48r5 Radio Devices
2.1 About the GM47r5/GM48r5 Family
Two radio devices make up the family; GM47r5 and GM48r5,
for use in the E-GSM900/GSM1800 and GSM850/GSM1900
bands respectively.
Note!
This manual refers to the GM47r5 and GM48r5 as radio
devices. If there is a difference in the functionality of the radio
devices the GM47r5 and GM48r5 information will be listed
separately.
The products belong to a new generation of Sony Ericsson
radio devices, and are intended to be used in machine-to-
machine applications and man-to-machine applications. They
are used when there is a need to send and receive data (by
SMS, CSD, HSCSD, or GPRS), and make voice calls over the
GSM network.
The radio devices can either have applications embedded onto
them or they can be used as the engine in an application
created by the customer. The radio device can send and
receive data when a script is executed, the script can be run
internally from the radio device itself or from a micro-controller.
A typical application, involves a micro-controller and a radio
device, in which the micro-controller sends AT commands to the
radio device via an RS232 communications link.
2.2 Radio Devices in a Communication System
Figures 2.1 and 2.2 illustrate the main blocks of a wireless
communication system using the radio device. Figure 2.1
shows the communication system when the script is embedded
on the radio device and figure 2.2 shows the communication
system when a micro-controller is used. They also show the
communication principles of the system and the interface
between the radio device and the application. The definitions in
the figures, as used elsewhere in this manual, are in
accordance with the recommendations of GSM 07.07.
•
The MS (mobile station) represents the radio device and
SIM card. The radio device excluding SIM card, is known as
the ME (mobile equipment).
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