User's Manual

Unit Descriptions - Digital Path
P/N 709C011801
Page 42
3.2.1 CEM (Centralized Ethernet Module)
The CEU supports up to three CEM modules, where each CEM supports four Ethernet ports (LAN switch connections) and four
F/O connectors (towards GEM modules). All interfaces (except for power) are located on the front panel (see section CEM).
Figure 3-4. CEM Interfaces (Installed in CEU)
The CEM module interfaces include Ethernet connections to the Ethernet switch, F/O connections and LED status indicators.
The following table provides a description of the CEM ports.
Port Description
ETH Four ETH connections to LAN switch
F/O
[4] 10/100/1000BASE-T RJ-45 connectors to [4] LC/UPC fiber connectors (using SFP
–small-form pluggable module)
USB port
USB serial port - service port
PWR Steady Green – Power input detected for corresponding module
Table 3-1. Ports Description