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Chapter 1 - System Description
Subscriber Units
The Subscriber Unit (SU) installed at the customer premises provides
data connections to the Access Unit. The 10/100BaseT Ethernet port
connects to the user's data equipment, providing bridge functionality,
traffic shaping and classification, and it is able to support up to 512
MAC addresses.
The Subscriber Unit is based on high integration of VLSI design that
provides high reliability and serves as an efficient platform for a wide
range of services. The system provides its subscribers with fast access
to IP based services at a burst data rate up to 12.7 Mbps over a
3.5 MHz channel. The use of packet switching technology provides the
user with a connection to the network that is practically always on,
allowing for immediate access to services.
The Subscriber Unit is comprised of an Indoor Unit (IDU) and an
Outdoor Unit (ODU).
The SU-ODU contains the modem, radio, data processing and
management components of the Subscriber Unit. It also contains an
integral high-gain flat antenna or a connection to an external antenna,
as described in Table 1-2.
ODU Type
BMAX-CPE-ODU-AV-3.5
BMAX-CPE-ODU-AH-3.5
BMAX-CPE-ODU-E-3.5
The indoor unit is powered from the mains. The SU-IDU is connected to
the SU-ODU via a category 5 Ethernet cable. This cable carries the
Ethernet data between the two units as well as power (-54VDC) and
control signals to the SU-ODU. It also carries status indications from
the SU-ODU. The BMAX-CPE-IDU-1D connects to the subscriber's data
equipment through a 10/100 Base-T Ethernet port.
1-4
Table 1-2: Subscriber Unit ODU's Types
Description
Subscriber Outdoor Unit supporting the 3.5a and 3.5b
bands with an integrated vertically polarized antenna
Subscriber Outdoor Unit supporting the 3.5a and 3.5b
bands with an integrated horizontally polarized antenna
Subscriber Outdoor Unit supporting the 3.5a and 3.5b
bands with a connection to an external antenna
BreezeMAX System Manual
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