Network Router User Manual

6-2
Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter 6 Configuring VOA Module Interfaces
About Variable Optical Attenuation
Figure 6-1 Four Channel Equalization with Three Power Equalizers
VOA Modules
The VOA modules are half-width modules inserted into a carrier motherboard installed in a
Cisco ONS 15530 shelf. The carrier motherboards can be installed in slots 1 through 4 and 7 through 10.
All optical connectors are located on the front panel and the connectors are angled and recessed.
Each carrier motherboard can hold up to two VOA modules. There are four types of VOA modules
available:
• Single WB-VOA modules
• Dual WB-VOA modules
• Single band PB-OE modules
• Dual band PB-OE modules
Figure 6-2 shows the types of VOA modules.
Band A Band B Band CD 1-VOA
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