Chapter 8. Protection
Vol. IV-8-24 Alcatel-Lucent
• As the tribs are not protected for Hot Standby: Non-protected Tributary
operation, each IDU is separately trib-cabled (cross-over or straight cables) to
its user interface. Y cables are not used.
Figure 8-7. IDU 20x: Normal Data Flow
For easy simultaneous viewing of multiple screens, move and resize the screens.
Once the screen positions are set, the same positions for primary and secondary
IDUs appear each time a protected IDU pairing is opened
Tx
Tx Rx
Rx
Rx
Rx
IDU IDU
IDU IDU
ODU
ODU ODU
ODU
20xE1 / 16xDS1
Tribs
20xE1 / 16xDS1
Tribs
20xE1 / 16xDS1
Tribs
20xE1 / 16xDS1
Tribs
Primary
Primary
Secondary
Secondary
Expansion Cable
Expansion Cable
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