Emerson ATCA-8310 Manual page 37

Introduction
To fulfill the requirements of Telcordia GR-1089,R4-14, use Shielded Twisted Pair (STP)
cables grounded at both ends to connect to the Ethernet ports.
This blade contains an embedded power source rated >150W. To achieve NEBS
compliance on system level, Shelf Ground (chassis ground) and Logic Ground (logic
signal return) have to be connected. The connection may be implemented inside the
shelf, for example at the backplane, or the shelf has to provide a possibility to lead Logic
Ground out of the shelf for external connection to Central Office Ground. For further
information refer to Telcordia GR-1089-CORE, section 9.8.2, requirement R9-14.
The product has been designed to meet the directive on the restriction of the use of
certain hazardous substances in electrical and electronic equipment (RoHS) Directive
2002/95/EC.
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ATCA-8310 Installation and Use (6806800M72D)