Cisco ASR 903

Figure 31: 48 x T3/E3 Interface Module
Figure 32: 48-port T3/E3 Faceplate
For more information about installing an optical interface module, see Interface Module Installation.
4-Port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) Interface Module
The 4-port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) interface module can operate as up to four
STM-1 interfaces. The figure below shows the interface module.
The optical interface module is designed for OC-3 and OC-12 traffic. OC-12 is only supported on the RSP1
module on the router.
Note
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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Overview
4-Port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) Interface Module