Galaxy H7920 Mobile Router User Manual Chapter 1: Introduction
M80-792001-01 1
Chapter 1 Introduction This chapter introduces the Galaxy H7920 Mobile Router general
descriptions, features and philosophy.
1. General
2. System Features
3. Specifications
4. Typical Applications
5. Types Description
1.1 General
2.5G mobile communication technology (GPRS/EDGE/CDMA 1x) has become
widely used of industrials and utilities in recent years and many customers are
seeking reliable, flexible and cost-effective data channel to build their
information system. Many applications such as ATM, POS, SCADA and
surveillance system will require data channels covered all country; this brings a
bright future for GPRS/EDGE and CDMA 1x data networks applications.
Requirements towards information system are varied because of different
features of numerous industrial applications. Mobile telecom service providers
are required to provide industrial application solutions not only meeting common
specifications and also individual special ones. Hence, Hongdian co-operates
with mobile service providers to design products and network configurations
suitable to industrial end users’ individualized applications. Hongdian has
developed embedded, advanced and reliable Galaxy mobile (GPRS/EDGE/CDMA
1x) router for the applications.
Galaxy H7920 Mobile Router User Manual Chapter 1: Introduction
M80-792001-01 2
GPRS network theoretically can provide a maximum bandwidth 171.2Kbps,
actually; it works at 40~100Kbps bandwidth (it depends on service provider’s
operation policy). As we know, GPRS is packet based network which provides
TCP/IP communication channel.
Same as GPRS/EDGE network, CDMA 1x network can provide a maximum
bandwidth up to 300Kb/s and actual transmitting and receiving bandwidth
reaches 100Kb/s.
Typical center to multipoint system configuration plan is as below.
Internet
Internet
GPRSor
CDMA 1X
Network
GPRSor
CDMA 1X
Network
Video Server
Internet
Internet
GPRSor
CDMA 1X
Network
GPRSor
CDMA 1X
Network
Internet
Internet
GPRSor
CDMA 1X
Network
GPRSor
CDMA 1X
Network
Video Server
Requirements are different from customer to customer; below paragraphs will
describe the typical applications.
Since Hongdian has many years experience of mobile data communication, it
proves that Hongdian products are widely applied and work stably. Galaxy router
is a dedicated ideal data transmission channel for industrial applications. The
manual explains setup procedure of H7920 router and provides the system
operation guide.
1.2 System Features
Basic Features
GPRS/EDGE Part
Support dual band GSM/GPRS/EDGE
Complies with ETSI GSM Phase 2+Standard
CDMA Part
Support 800/1900MHz band
Complies with FCC/SAR and CDG 1/2&3
Real time clock