Table of Contents

2.1 Tool and Equipment Requirements
2.2 Site Requirements

2.2.1 Space Requirements
2.2.2 Power Requirements
2.2.3 Rack-Mounting Requirements
2.2.4 Ventilation Guidelines
2.2.5 Environmental Requirements

Preparing for Installation

This chapter lists the tools and equipment that you need to install your Cisco 6130 NI-2 DSLAM. It also lists the site requirements for such an installation.

Installation preparation of the Cisco 6130 NI-2 DSLAM consists of the following:

• Tool and Equipment Requirements

• Site Requirements

  • Space Requirements

  • Power Requirements

  • Rack-Mounting Requirements

  • Ventilation Guidelines

  • Environmental Requirements

2.1 Tool and Equipment Requirements

The Cisco 6130 NI-2 DSLAM has no internal user-serviceable parts. However, you can add or remove a module or a fan without removing power from the system.

• The system I/O card installation kit.

• A 3/16-inch flat-blade screwdriver.

• A Phillips-head screwdriver.

• A one-quarter inch socket driver and assorted small sockets or small wrenches.

• Equipment for electrostatic discharge (ESD) protection is needed whenever you handle Cisco 6130 DSLAM equipment, which includes the chassis, modules, and cards.

• Assorted small mounting screws.

• Wire wrapping tool.

• Wire stripper.

• Wire for connections:

  • 24 to 28 American Wire Gauge (AWG) solid---use for the fan tray (P2) to multiplexer (DSLAM) chassis (P14) connection.

  • 14 to 18 AWG copper solid or stranded---use for power connections.

  • 14 AWG or thicker green or green with yellow stripes copper stranded---use for chassis, fan tray, and POTS splitter grounding.

• Tie wraps.

• Cable used to connect the fan tray alarm relay contacts to the chassis backplane.

• Cable used to connect the network interface (NI-2) module to the network---cable types are discussed in each installation chapter.

Warning Only trained personnel should be allowed to install, replace, or service this equipment.

Two people are needed for lifting, installing, and removing a chassis and some of its components.

2.2 Site Requirements

This section describes requirements for the site in which the Cisco 6130 NI-2 DSLAM equipment is installed. Before you install the Cisco 6130 NI-2 DSLAM, ensure that all the criteria in this section are met. The section describes the following:

• Space Requirements

• Power Requirements

• Rack-Mounting Requirements

• Ventilation Guidelines

• Environmental Requirements

2.2.1 Space Requirements

You can install a combination of the Cisco 6130 NI-2 DSLAM components in a 7-foot rack:

• Fan tray---Required to achieve Network Equipment Building Systems (NEBS) compliance when you are using the Cisco 6130 NI-2 DSLAM.

• Chassis---Up to two chassis are allowed per rack.

• POTS splitter---Required in a Cisco 6130 NI-2 DSLAM installation that accommodates both voice analog and digital data subscriber lines.

The Cisco 6130 NI-2 DSLAM fits in a 23-inch rack. See Table 2-1 for individual rack space requirements.

Table 2-1: Rack Space Requirements

Component	Rack Space	Height	Depth
Fan tray1	2 RUs2	3.5 in. (8.89 cm)	12 in. (30.48 cm)
Chassis	9 RUs	15.75 in. (40.00 cm)	12 in. (30.48 cm)
POTS splitter	4 RUs	7 in. (17.78 cm)	12 in. (30.48 cm)

1Leave 1 RU of space under the fan tray. This space allows for the intake plenum and for cabling back to front for the OC-3c NI module. 21 RU = 1 rack unit = 1.75 in.

For calculation tables, see "Planning for a Cisco 6130 NI-2 DSLAM System." You need the tables to determine total rack space for your Cisco 6130 NI-2 DSLAM configuration.

2.2.2 Power Requirements

External power is supplied to the system as -48 VDC, from the central office (CO) facility power source or rectifier, to the fuse and alarm panel. Power connections from the fuse and alarm panel are wired separately to the Cisco 6130 DSLAM chassis and to the fan tray. Connections for single and dual -48 VDC feeds are provided. The power input connections are redundant, and only one is necessary for proper system operation. The nominal operating voltage is -48 VDC; the minimum operating voltage is -36 VDC and the maximum operating voltage is -60 VDC.

Before you connect the equipment to a power source, verify that the power source is properly grounded and that it falls within the internal power supply rating. The internal power rating for the chassis is 364W maximum.

You need to calculate the power and current consumed by each Cisco 6130 NI-2 component. See "Planning for a Cisco 6130 NI-2 DSLAM System," for calculation tables. You need the tables to determine the fuse current for each component that is wired to the fuse and alarm panel. You can also use the tables to determine if the power in your rack exceeds acceptable levels. If the power exceeds acceptable levels, either replan your configuration or use more than one rack to house the Cisco 6130 NI-2 DSLAM components.

2.2.3 Rack-Mounting Requirements

Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back.

Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.

We strongly recommend that you mount the Cisco 6130 NI-2 DSLAM in a rack. Ensure that vertical hole spacing on the rack rails meets standard EIA-310-C requirements---1 inch (2.54 cm) spacing. All portions of the rack are equal to or less than the NEBS maximum allowances of 12 inches.

When you install the Cisco 6130 NI-2 DSLAM chassis in a rack, be sure to allow enough room to access the backplane of the unit for wiring and cabling purposes. The majority of the connectors are located on the backplane.

2.2.4 Ventilation Guidelines

Use the following guidelines to ensure proper ventilation for the Cisco 6130 DSLAM:

• Chassis placement---Leave 1 RU of space under a fan tray.

• Fan tray installation---To achieve NEBS compliance, you must bolt a fan tray into the rack under each Cisco 6100 NI-2 DSLAM chassis and connect it to the Cisco 6130 DSLAM backplane.

• POTS splitter heat dissipation---The POTS splitters do not dissipate heat. Position them as described in "Installing a Cisco 6130 NI-2 DSLAM with a POTS Splitter."

2.2.5 Environmental Requirements

Proper operation of the Cisco 6130 NI-2 DSLAM depends on a proper environment. The system can tolerate a wide range of temperatures. Table 2-2 lists the Cisco requirements for temperature, altitude, and humidity conditions in a CO facility environment.

Table 2-2: CO Operating Environment Requirements

Environmental Specifications	Description
Temperature Altitude Humidity	41 to 104ºF (5 to 40ºC)---Operation 23 to 163ºF (-5 to 50ºC)---Short-term operation -60 to 3200 meters 5 to 90% (noncondensing)

Warning To prevent a Cisco 6130 NI-2 DSLAM from overheating, do not operate it in environments whose temperature is above the maximum recommended ambient temperature of 104°F (40°C).

Posted: Mon Mar 6 07:03:18 PST 2000
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