Cisco ASR 903

Figure 33: 4-port OC-3 Interface Module
For information on supported SFP modules, see Cisco ASR 900 Series Aggregation Services Routers Data
Sheet.
For more information about installing an optical interface module, see Interface Module Installation.
1-port OC-48/STM-16 or 4-port OC-12/OC-3 / STM-1/STM-4 + 12-Port T1/E1 + 4-Port T3/E3 CEM
Interface Module
The A900-IMA3G-IMSG interface module supports:
• 12xDS1/E1 + 4xDS3/E3 interface over the high-density port.
• 1xOC48/12/3 Gigabit interface and 3xOC12/3 Gigabit interface.
If OC48 is enabled, then the remaining 3 ports are disabled.
Note
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
35
Overview
1-port OC-48/STM-16 or 4-port OC-12/OC-3 / STM-1/STM-4 + 12-Port T1/E1 + 4-Port T3/E3 CEM Interface Module