Chapter 1 - System Description Subscriber Unit
BreezeACCESS 4900 8 System Manual
1.3 Subscriber Unit
The Subscriber Unit (SU) installed at the customer premises enables the customer
data connection to the Access Unit. The Subscriber Unit provides an efficient
platform for high speed Internet and Intranet services. The use of packet
switching technology provides the user with a connection to the network that is
always on, enabling immediate access to services.
The Subscriber Unit comprises a desktop or wall-mountable Indoor Unit (IDU)
and an outdoor unit that contains the processing and radio modules. Two ODU
types are available to support a wide range of requirements, as detailed in
Table 1-2:
The IDU provides the interface to the user's equipment and is powered from the
110/220 VAC mains. The customer's data equipment is connected via a standard
IEEE 802.3 Ethernet 10/100BaseT (RJ 45) interface. The indoor unit is connected
to the outdoor unit via a Category 5E Ethernet cable. This cable carries Ethernet
traffic between the indoor and the outdoor units, and also transfers power (54
VDC) and control from the indoor unit to the outdoor unit.
Table 1-2: Subscriber Unit ODU Types
SU Type Antenna Description
SU-A-ODU Vertically polarized high-gain flat antenna integrated on the front
panel
SU-E-ODU A connection to an external antenna
