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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-04
Chapter 1 Cisco ASR 903 Router Overview
Cisco ASR 903 Router Features
OC-3 Interface Module
The OC-3 interface module can operate as up to four STM-1 interfaces.
Note The optical interface module is designed for OC-3 and OC-12 traffic, but OC-12 functionality is not
currently supported.
Figure 1-8 shows the interface module.
Figure 1-8 4 x OC-3 Interface Module
Supported SFP Modules
The optical interface module supports the following optical transceivers:
• ONS-SC-155-EL
• ONS-SI-155-I1
• ONS-SI-155-L1
• ONS-SI-155-L2
• ONS-SI-155-SR-MM
For more information about installing an optical interface module, see the “Interface Module
Installation” section on page 3-14.
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