This section identifies the location and slot numbers for the cards and power modules that plug into the chassis.

The chassis has the following card slots:

• Nine LC slots (LC0 to LC8)
• Two RP slots (RP0 and RP1)
• Four FC slots (FC0 to FC3)
• One fan tray
• One external connection unit (ECU) located above the fan tray behind the craft panel
• One fiber management tray at the top of the chassis
• One air inlet and one air outlet
• Eight power modules for redundancy
• The upper four AC or DC power trays (0-3) are contained within power shelf 0 (PS0) and the lower four AC or DC power trays (4-7) are contained within power shelf 1 (PS1).

The cards have electrical plugs at the back that plug into electrical connectors on the shelf backplane. When the ejectors are fully closed, the card plugs into the assembly backplane.

The chassis has eight power modules for redundancy:

• The upper four power modules are contained within power tray 0 (PS0). They are named as follows: PS0-PM0, PS0-PM1, PS0-PM2, and PS0-PM3.
• The lower four power modules are contained within power tray 1 (PS1). They are named as follows: PS1-PM0, PS1-PM1, PS1-PM2, and PS1-PM3.

This figure shows card installation for the Cisco NCS 4009 chassis.

Slots FC0 through FC3 are dedicated to fabric cards. Slots RP0 and RP1 are reserved for route processor cards. Slots LC0 to LC8 are reserved for line cards.

Shelf assembly slots have symbols indicating the type of cards that you can install in them. Each Cisco NCS 4009 card has a corresponding symbol. The symbol on the card must match the symbol on the slot.

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. We recommend use of an ESD-preventive wrist strap whenever you handle network equipment or one of its components.

Following are guidelines for preventing ESD damage:

• Always use an ESD-preventive wrist or ankle strap, and ensure that it makes good skin contact. Connect the equipment end of the connection cord to an ESD jack or a bare metal surface on the chassis (ensure the chassis is grounded).
• Handle a card by its ejector levers, when applicable, or its metal carrier only; avoid touching the board or connector pins.
• Place a removed card board side up on an antistatic surface or in a static-shielding bag. If you plan to return the component to the factory, immediately place it in a static-shielding bag.
• Avoid contact between a card and clothing. The wrist strap protects the board from only ESD voltage on the body; ESD voltage on clothing can still cause damage.

NEBS describes the environment of a typical United States Regional Bell Operating Company (RBOC) central office. NEBS is the most common set of safety, spatial, and environmental design standards applied to telecommunications equipment in the United States. It is not a legal or regulatory requirement, but rather an industry requirement.

The following NEBS statements apply to the Cisco NCS 4009:

Note	Statement 7001—ESD Mitigation This equipment may be ESD sensitive. Always use an ESD ankle or wrist strap before handling equipment. Connect the equipment end of the ESD strap to an unfinished surface of the equipment chassis or to the ESD jack on the equipment if provided.

Warning

Statement 7003—Shielded Cable Shielded Cable Requirements for Intrabuilding Lightning Surge The intrabuilding port(s) of the equipment or subassembly must use shielded intrabuilding cabling/wiring that is grounded at both ends. The following port(s) are considered intrabuilding ports on this equipment: ETH0, ETH1, ETH2, 1588, EMS, CRAFT

Warning

Statement 7005—Intrabuilding Lightning Surge and AC Power Fault The intrabuilding port(s) of the equipment or subassembly must not be metallically connected to interfaces that connect to the outside plant (OSP) or its wiring. These interfaces are designed for use as intrabuilding interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE) and require isolation from the exposed OSP cabling. The addition of primary protectors is not sufficient protection to connect these interfaces metallically to OSP wiring. This statement applies to the intrabuilding ports listed below: ETH0, ETH1, ETH2, 1588, EMS, CRAFT

Note	Statement 7012—Equipment Interfacing with AC Power Ports Connect this equipment to AC mains that are provided with a surge protective device (SPD) at the service equipment that complies with NFPA 70, the National Electrical Code (NEC).

Note	Statement 7013—Equipment Grounding Systems—Common Bonding Network (CBN) This equipment is suitable for installations using the CBN.

Note

Statement 7015—Equipment Bonding and Grounding When you use thread-forming screws to bond equipment to its mounting metalwork, remove any paint and nonconductive coatings and clean the joining surfaces. Apply an antioxidant compound before joining the surfaces between the equipment and mounting metalwork.

Note	Statement 7016—Battery Return Conductor The battery return conductor of this equipment shall be treated as (DC-I).

Note	Statement 7018—System Recover Time The equipment is designed to boot up in less than 30 minutes provided the neighboring devices are fully operational.

Note	Statement 8015—Installation Location Network Telecommunications Facilities This equipment is suitable for installation in network telecommunications facilities.

Note	Statement 8016—Installation Location Where the National Electric Code (NEC) Applies This equipment is suitable for installation in locations where the NEC applies.