Adtran NetVanta Ethernet Port Protection Device

The NetVanta Ethernet Port Protection Device (EPPD) is a single port Ethernet
surge protector for outside plant (OSP) environments where Ethernet cabling is
exposed to external hazards.

During a power failure or lightning strike the LINE side of the EPPD minimizes
the voltages and current levels transferred to the Ethernet port of the equipment
being protected, allowing the Ethernet port to continue functioning properly.
Additionally, the EPPD protects itself and the Ethernet port from becoming a fire
or fragmentation hazard.