WinLink™ 1000 System ComponentsWinLink User and Installation Guide Version 1.750 2-19The Indoor Unit (IDU)The IDU provides TDM and Ethernet ports to connect to the link. Italso provides power to the ODU. The IDU is available in fourconfigurations:IDU-EA compact, half 19 inch wide, 1U plastic unit, providing up to twoEthernet ports and up to two E1/T1 interfaces.Figure 2-2: IDU-E Front PanelFigure 2-3: IDU-E Back PanelIDU-CA 19 inch, 1U metal unit, providing two Ethernet ports, 4xE1/T1interfaces, and dry contact connector alarm.Figure 2-4: IDU-C Front PanelIDU-RA compact, half 19 inch, 1U plastic unit for 1 x T1/E1 backup, providingin addition 2 Ethernet ports and an external alarms interface. IDU-R isan indoor unit used for automatic backup of leased lines. IDU-Rmonitors the status of leased lines, and in the event of a connectionfailure automatically switches to the radio link. The user configureswhich of the two links is the main link and which is the backup link.IDU-R operates with all WinLink™ 1000 outdoor units.Figure 2-5: IDU-R Front PanelFigure 2-6: IDU-R Back Panel
