Cisco Systems XR 12404 manual Supplemental Bonding and Grounding Port for Nebs Compliance

Chapter 3 Installing the Router

Supplemental Bonding and Grounding Connections

•On Cisco XR 12404 Routers configured for DC-input operation, the DC PDU is equipped with a DC power connector block with wire-connection terminals for connecting the negative lead (top terminal), the positive lead (middle terminal), and the ground lead (bottom terminal). This is a safety feature.

Note Cisco XR 12404 Router grounding architecture conforms to the DC-I

(DC-isolated) method of grounding as described in Telcordia GR-1089-CORE. A DC-I architecture means that there is no connection between the DC return terminal and the frame ground. DC return and frame ground are isolated from one another at the router.

If the router is installed in a NEBS environment, we strongly recommend that you connect the central office ground system or interior equipment grounding system to the supplemental bonding and grounding point on the router chassis. This grounding point consists of threaded inserts is located on the side of the chassis near the back of the chassis (see Figure 3-3). It is also referred to as the NEBS bonding and grounding receptacle, and is intended to satisfy the Telcordia NEBS requirements for supplemental bonding and grounding connections.

Figure 3-3 Supplemental Bonding and Grounding Port for NEBS

Compliance

CLEAN

CLASS 1 LASER		PRODUCT
LASERPRODUKT			1
PRODUIT		DER KLASSE
	LASER DE CLASSE		1
PRODUCTO LASER DE CLASSE 1

0	TX
1	RX
2
	3
AUX
OLE
CONS
	CRI
	TICAMAJ MI
	L ORNOR

40C48/POS-SR-SC

GIGABIT ROUTE PROCESSOR

MBUS

FAIL

ENABLE

CONSOLIDATED SWITCH FABRIC

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	Cisco XR 12404 Router Installation Guide
3-9	OL-13830-02