Cisco 1805 DOCSIS Cable Router Hardware Installation Guide
Preinstallation Requirements and Planning for Cisco 1805 DOCSIS Cable Routers
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Preinstallation Requirements and Planning for Cisco 1805 DOCSIS Cable Routers

Table Of Contents

Preinstallation Requirements and Planning for Cisco 1805 DOCSIS Cable Routers

Safety Recommendations

Safety with Electricity

Preventing Electrostatic Discharge Damage

General Site Requirements

Power Supply Considerations

Site Environment

Site Configuration

Installation Checklist

Site Log

Inspecting the Router

Required Tools and Equipment for Installation and Maintenance

Preinstallation Requirements and Planning for Cisco 1805 DOCSIS Cable Routers

This chapter describes the site requirements and equipment needed to install your Cisco 1805 DOCSIS cable router. This chapter includes the following sections:

Safety Recommendations

General Site Requirements

Installation Checklist

Site Log

Inspecting the Router

Required Tools and Equipment for Installation and Maintenance

Note Before you install, operate, or service the system, read the Regulatory Compliance and Safety Information for Cisco 1840 Routers for important safety information and translations of the warnings that appear in this guide.

Safety Recommendations

Follow these guidelines to ensure general safety:

Keep the chassis area clear and dust-free during and after installation.

If you remove the chassis cover, put it in a safe place.

Keep tools and chassis components away from walk areas.

Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf, and roll up your sleeves.

Wear safety glasses when working under conditions that might be hazardous to your eyes.

Do not perform any action that creates a hazard to people or makes the equipment unsafe.

Warning Read the installation instructions before connecting the system to the power source. Statement 1004

Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement 1029

Warning To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans, or cards); these types of handles are not designed to support the weight of the unit. Statement 1032

Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

Safety with Electricity

Follow these guidelines when working on equipment powered by electricity.

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Warning Read the installation instructions before connecting the system to the power source. Statement 1004

Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

Locate the emergency power-off switch in the room in which you are working. If an electrical accident occurs, you can quickly turn off the power.

Disconnect all power before doing the following:

Installing or removing a chassis

Working near power supplies

Removing the top cover of a chassis

Look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension cables, frayed power cords, and missing safety grounds.

Do not work alone under hazardous conditions.

Never assume that power is disconnected from a circuit. Always check.

Never open the enclosure of the router's internal power supply.

If an electrical accident occurs, proceed as follows:

Use caution; do not become a victim yourself.

Turn off power to the device.

If possible, send another person to get medical aid. Otherwise, assess the victim's condition and then call for help.

Determine whether the person needs rescue breathing or external cardiac compressions; then take appropriate action.

In addition, use the following guidelines when working with any equipment that is disconnected from a power source, but is still connected to telephone wiring or other network cabling:

Never install telephone wiring during a lightning storm.

Never install telephone jacks in wet locations unless the jack is specifically designed for it.

Never touch uninsulated telephone wires or terminals unless the telephone line is disconnected at the network interface.

Use caution when installing or modifying telephone lines.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD can occur if electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing modules:

Ensure that the router chassis is electrically connected to earth ground.

Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively.

If no wrist strap is available, ground yourself by touching a metal part of the chassis.

Caution For the safety of your equipment, periodically check the resistance value of the antistatic strap. It should be between 1 and 10 megohms (Mohm).

General Site Requirements

This section describes the requirements that your site must meet for safe installation and operation of your router. Ensure that the site is properly prepared before you begin the installation. If you are experiencing shutdowns or unusually high errors with your existing equipment, this section can also help you isolate the cause of failures and prevent future problems.

Power Supply Considerations

Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise). Install a power conditioner if necessary.

Warning The device is designed for connection to TN and IT power systems. Statement 1007

The AC power supply includes the following features:

Autoselects either 110V or 220V operation.

All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power cord indicates the correct voltage, frequency, current draw, and power dissipation for the unit.)

Site Environment

The Cisco 1805 DOCSIS cable router is designed for placement on a desktop.

The location of your router is an extremely important consideration for proper operation. Equipment placed too close to other equipment, inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can also make maintenance difficult. Plan for access to both front and back panels of the router.

When planning your site layout and equipment locations, keep in mind the precautions described in the "Site Configuration" section to help avoid equipment failures and reduce the possibility of environmentally caused shutdowns. If you are experiencing shutdowns or an unusually high number of errors with your existing equipment, these precautions may help you isolate the cause of the failures and prevent future problems.

Site Configuration

The following precautions will help you plan an acceptable operating environment for your router and will help you avoid environmentally caused equipment failures:

Make sure that the room where your router operates has adequate circulation. Electrical equipment generates heat. Without adequate circulation, ambient air temperature may not cool equipment to acceptable operating temperatures.

Always follow the ESD-prevention procedures described in the "Preventing Electrostatic Discharge Damage" section to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure.

Make sure that the chassis cover and module back panels are secure. All empty interface card slots must have filler panels installed. The chassis is designed to allow cooling air to flow within it, through specially designed cooling slots. An uncovered chassis opening creates air leaks, which may interrupt and reduce the flow of air across internal components.

Installation Checklist

The sample installation checklist lists items and procedures for installing a new router. Make a copy of this checklist, and mark each item when you complete it. Include a copy of the checklist for each router in your Site Log (described in the "Site Log" section).

Installation Checklist for Site _____________________________________________

Router Name _______________________________________________________

Verified by

Installation Checklist copied


Background information recorded in the Site Log


Site power voltages verified


Installation site power check completed


Required tools available


Additional equipment available


Router received


Product registration card received contact information label received


Chassis components verified


Initial electrical connections established


ASCII terminal (for local configuration) or modem (for remote configuration) available


Signal distance limits verified


Startup sequence steps completed


Initial operation verified


Software image verified


Site Log

The Site Log is a record of all actions related to the router. Keep it in an accessible place near the chassis so that anyone who performs tasks has easy access to it. Use the Installation Checklist to verify steps in installation and maintenance of the router. Site Log entries might include the following information:

Installation progress—Make a copy of the Installation Checklist, and insert it into the Site Log. Record pertinent information as each procedure is completed.

Upgrade and maintenance procedures—Use the Site Log as a record of ongoing router maintenance and expansion. A Site Log might include the following events:

Installation of network modules

Removal or replacement of network modules and other upgrades

Configuration changes

Maintenance schedules and requirements

Maintenance procedures performed

Intermittent problems

Comments and notes

Inspecting the Router

Do not unpack the router until you are ready to install it. If the final installation site will not be ready for some time, keep the chassis in its shipping container to prevent accidental damage.

The router, cables, publications, and any optional equipment that you ordered may be shipped in more than one container.

Required Tools and Equipment for Installation and Maintenance

You need the following tools and equipment for installing and upgrading the router and its components:

ESD-preventive cord and wrist strap

Number 2 Phillips screwdriver

Flat-blade screwdrivers: small, 3/16-inch (0.48 centimeter) and medium, 1/4-inch (0.63 centimeter)

For installing or removing modules

For removing the cover if you are upgrading memory or other components

Wire crimper

AWG 14 wire for connecting the router chassis to earth ground

In addition, depending on the type of modules you plan to use, you might need the following equipment to connect a port to an external network:

Cables for connection to WAN and LAN ports (dependent on configuration)

Note For more information on cable specifications, see the Cisco Modular Access Router Cable Specifications.

Ethernet hub or PC with a network interface card for connection to Ethernet (LAN) ports

Console terminal (an ASCII terminal or a PC running terminal emulation software) configured for 9600 baud, 8 data bits, no parity, and 1 stop bit

Modem for connection to the auxiliary port for remote administrative access

Data service unit (DSU) or channel service unit/data service unit (CSU/DSU) as appropriate for serial interfaces

External CSU for any CT1/PRI modules without a built-in CSU

NT1 device for ISDN BRI S/T interfaces (if not supplied by your service provider)