User's Manual

Corning Restricted
Corning Optical Communications User Manual I CMA-482-AEN I Page 21
2.4 GEM
The GEM is an add-on module that provides Gigabit Ethernet support - the received optical signal is converted to two
Ethernet digital connections, which can then be routed along with PoE to third party equipment.
Figure 2-5. GEM Interfaces
Table 2-5 and Table 2-6 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 Ethernet fiber switch
Table 2-5. GEM Port Interfaces