Alcatel-Lucent 9500 MXC User Manual page 608

Chapter 15. Diagnostics
Vol. IV-15-46
Link Systems/Controls Screen: Protected IDUs
Figure 15-15.
1
2
3
Item Description
1 Screen default opens to Unit Protection. A Tab provides access to controls for
IDU Tx mute and loopbacks.
The Unit Protection window confirms the relationship with its partner unit,
providing the protection cable is fitted and networking has been configured. It
also confirms the protection type.
2 Graphic indicates the protection status.
Note that for the IDU 20x (except Hot Standby: Non-protected Tributary mode)
and IDU 155o, which support hitless Rx path switching (voting), both receivers
are receiving, with the online IDU Rx selecting which Rx stream to deliver to
its tribs on a block-by-block basis. The arrows indicate the online Tx and Rx
status.
3, 4 Tx and Rx online protection controls. For IDUs, the default protection
configuration has the primary IDU as online for Tx and Rx. Locks are supported
by a safety timer. (The example screen shows that the secondary IDU is online
for Tx and Rx).
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4
5
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