User's Manual
Eagle II GSM Radio Module Technical Manual Preliminary Draft: 08/31/00 8
Part Number: 07100017 version 00.04
© 2000 Xircom, Inc. All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc.
Incorporating GSM Communications into the Design
As shown in the Figure 1, the Eagle II module is designed for easy integration with other
components and packaging by leveraging the existing public GSM networks. Compare
the Eagle II to systems that require the construction, operation, maintenance, and
expense of a private wireless network.
Figure 1: Applications Using the Eagle II module in a GSM Network
The Eagle II module supports the following GSM features:
!
Short Message Service (SMS)
!
Unstructured Supplementary Service Data (USSD)
!
Circuit Switched Data (Transparent and Non-Transparent modes) for transmitting and
receiving data
!
Voice communications: Supports half-rate, full-rate and enhanced full-rate (EFR)
vocoding schemes.
The Eagle II module communicates via a V.24 serial interface and uses the GSM AT
command set. In addition, unique AT commands (see page 23) provide the opportunity to
monitor and report network conditions that may be relevant to the network management
of numerous deployed terminals.
GSM
Network
PSTN
User
MO DEM
Circuit Sw itched
Data Applica tions
Voice Applications
GSM
Network
Packet Data Applications
(Future)
IN TERN ET
Gateway
Gateway
SM S Applications
GPRS Applications
(Future)