48-Port T3/E3 Cem Interface Module; 4-Port Oc3/Stm-1 (Oc-3) Or 1-Port Oc12/Stm-4 (Oc-12) Interface Module - Cisco ASR 903 Hardware Installation Manual

Cisco ASR 903 Router Overview

48-Port T3/E3 CEM Interface Module

The 48-port T3/E3 interface module provides connectivity for up to 48 T3/E3 ports through 3 high-density
connectors on the front panel (see the figure below ). Each port supports 16 TX and RX ports. For information
on LEDs, see Interface Module LEDs.
Figure 27: 48 x T3/E3 Interface Module
Figure 28: 48-port T3/E3 Faceplate
For information on supported SFP modules, see
Sheet.
For more information about installing an optical interface module, see

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.
Cisco ASR 900 Series Aggregation Services Routers Data
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
Interface Modules
Interface Module Installation.
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