8018653 1.1 Introduction • 1-1
Chapter 1
Introduction
The GMH 2000
™
digital wireless communications system provides high-
quality telephone service to subscribers in mobile and fixed
environments. Figure 1-1 illustrates the GMH 2000 cellular system
architecture.
OMC
MSC
E1 TRUNK CIRCUIT E1 TRUNK CIRCUIT
T1 TRUNK
CIRCUIT
ETHERNET LINK
PSTN
BTS
Subsi
d
iar
y
o
f
H
ughes A
i
rcra
f
t
Compan
y
HUGHES
NETWORK SYST
E
MS
BSC BSC
BTS
MOBILE
STATIONS
Subsidiary of
Hughes Aircr
aft Company
HUGHES
NE
TWORK S
YSTEMS
BTS
T1 TRUNK
CIRCUIT
T1 TRUNK
CIRCUIT
SUBSCRIBER
SETS
MSU
Figure 1-1. The GMH 2000 digital wireless communications system architecture
The terms GHM 2000, M6100, and E-TDMA are trademarks of Hughes Network Systems, Inc. (HNS)