The Indoor Unit (IDU) Chapter 1
WinLink 1000 User Manual Release 1.9.40 1-9
The Indoor Unit (IDU)
The IDU has the service ports and provides aggregation of these services towards the ODU
that transports them over the air. The IDU also provides power to the ODU. The following
models are available for WinLink 1000:
New style IDU-E for both WinLink 1000 and RADWIN 2000
The new style IDU-E is a carrier grade, compact, half 19 inch wide, 1U plastic unit, providing
up to two Ethernet ports and up to two E1/T1 interfaces. It offers Layer 2 support for Ether-
net service and HSS support for collocated links. It is a low cost unit intended for both Access
applications and Enterprise use.
Figure 1-9: New style IDU-E - front view (Note new HSS LED on the left)
The IDU-E rear panel (right to left) has a 25 pin Dry Contact Alarms port. the two (or no)
trunk ports, two LAN ports, an ODU port and finally a 3 pin DC power plug identical to that
used on the IDU-C.
.
Figure 1-10: New style IDU-E: Rear panel
IDU-R
The IDU-R is a compact, half 19 inch, 1U plastic unit for 1 x T1/E1 backup, providing in addi-
tion 2 Ethernet ports and an external alarms interface. It looks the same as the IDU-E above,
without the HSS LED. The IDU-R is an indoor unit used for automatic backup of leased lines.
The IDU-R monitors the status of leased lines, and in the event of a connection failure auto-
matically switches to the radio link. You may choose which of the two links is the main link
and which is the backup link. The IDU-R may be configured for multi-hop (see Chapter 24).
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