User Manual

Demand Assignment
System Overview GSI 002
605-0000-450
Draft Issue 1.3dr Date 8/02/00
Page 2 of 16
Service
Interface
Unit
(Internal)
Antenna
(External)
Service
Interface
Unit
(Internal)
To PSTN
MANAGEMENT SITE
Sitespan Client
Sitespan
Server
Access
Concentrator
THE SWITCH SITE
RADIO SITE
NxE1
(e.g. Fibre, P- P
Microwave)
SUBSCRIBER SITES
Antenna
Central Terminal Racks
Antenna
(External)
Figure 1. AS4000 System
The AS4000 DA system comprises the following major sub-systems;
The Subscriber Terminals (STs) are located at the customer's premises, The Service
Interface Unit (SIU) is located internally and the antenna with I/F amplifier located
externally.