NEC Confidential
© NEC Corporation 2009
Page 7
Grounding
• The “ETH” lug is located near Power supply unit on each KSU.
• Connect “ ETH” lug to the verified Earth Ground point by using 14
AWG (2.0mm) wire.
KSU Grounding
Grounding must be done each KSU respectively.
Grounding is required not only for system protectio
n
bu
t also for Caller-ID detection.
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