Unit Descriptions - Digital Path P/N 709C011801 Page 51
3.3 GEM (Gigabit Ethernet Module)
The GEM converts the received optical signal to two Ethernet digital connections, which are then routed along with PoE to two
remote access points. The GEM module can be installed in the following configurations:
• Installed in RAU - as an optional plug-in module (see section 5.2.2)
• As a standalone module (GEU-S) - (see section 6.2)
Figure 3-5. GEM Interfaces
Table 3-2 and Table 3-3 provide descriptions of the ports and LED indicators.
Port Description
PORT A/PORT B
Two 10/100/1000Base-T copper interface with 802.3at compliant Power
over Ethernet (PoE+) PSE ports capability for connections to remote
access points
FC APC
One 1000BASE-X T Copper port to LC UPC fiber connectors (using
SFP –small-form pluggable module) towards CEM module
Table 3-2. GEM Port Interfaces
LED Description
Indicates power supplied to connected AP
LINK
Steady Green - the optical link to/from the connected remote functions
within the specifications in both directions.
Blinking Green - optical power from remote is lower than required
RUN Steady Green – GEM module SW is up and running
Table 3-3. GEM LED Indicator Descriptions
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