Installation & Maintenance Manual  24  Document #: LTRT-40111 
  Mediant 1000B SBA 
Item # 
Label/ 
Module 
Component Description 
If in the future you need to add such interfaces to your device, you can 
order this module separately. 
5  Power 1  (Optional) Spare Power Supply module slot. The device can provide two 
extractable power supply units (Power 1 and Power 2). Each power 
supply unit provides an AC power connector on its rear panel. If both 
Power 1 and Power 2 units are used, the load is shared between them. 
This (optional) load-sharing feature enables power failure protection 
(redundancy). When using this feature, you are advised to connect each 
power supply unit to a different AC supply circuit. 
6  Power 2  Main Power Supply module. 
7  Schematic  Extractable Fan Tray module with a schematic displayed on its front 
panel showing the chassis' slot numbers. The Fan Tray module cools the 
device's components.