3COM 3C10220 User Manual

3Com Ethernet Power Source Guide

3C10220 - 12-Port Ethernet Power Source 3C10222 - 24-Port Ethernet Power Source

http://www.3com.com/

Part Number: 10038538-01 Rev B Published: November 2000

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 2000, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.

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If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hardcopy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

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CONTENTS

ABOUT THIS GUIDE

Conventions 5 Documentation Comments 6 Year 2000 Compliance 6 3Com Support 7

1 3COM ETHERNET POWER SOURCE OVERVIEW

Overview 10

Features 10

Front Panel Connections and LEDs 11

10/100BASE-TX Data Input Ports 11 10/100BASE-TX Data and Power Output Ports 12 LEDs 12

Rear Panel Connections 14

Information Label 14 Console Port 14 DC Power Socket 15 AC Power Socket 15

Guidelines for Network Configuration 15

2 INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES

Choosing a Suitable Site 20 Rack-mounting the EPS 21 Power-up Sequence 22

Adding Power 22

Verifying Correct Operation 22 Selecting the Correct Cables 22 Power Splitter Cable 24 Connecting an NBX Business Telephone 24 Connecting a 3Com Wireless Access Point 25

3 TROUBLESHOOTING

Solving EPS Problems 27 Solving NBX Telephone Problems 30 Solving Wireless Access Point Problems 32

A SAFETY INFORMATION

Important Safety Information 36 L’information de Sécurité Importante 37 Wichtige Sicherheitsinformationen 39

B TECHNICAL SPECIFICATIONS AND PIN ASSIGNMENTS

3COM CORPORATION LIMITED WARRANTY

ABOUT THIS GUIDE

This guide provides all the information that you need to install and use either of the Ethernet Power Source (EPS) units:

■ 3C10220 — with 12 10BASE-T/100BASE-TX ports

■ 3C10222 — with 24 10BASE-T/100BASE-TX ports

The guide is intended for use by installers or network administrators who are responsible for installing and setting up network equipment. It assumes a basic working knowledge of LANs.

Conventions Table 1 and Table 2 list conventions that are used throughout this guide.

Tab le 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or

instructions

Caution Information that alerts you to potential loss of data or

Warning Information that alerts you to potential personal injury

potential damage to an application, system, network, or device

6 ABOUT THIS GUIDE

Tab le 2 Text Conventions

Documentation Comments

Convention

Description

Screen displays This typeface represents information as it appears on the

screen.

Commands The word “command” means that you must enter the

command exactly as shown and then press Return or Enter. Commands appear in bold.

The words “enter” and “type”

When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

Keyboard key names If you must press two or more keys simultaneously, the key

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

Words in italics Italics are used in this guide to:

■ Emphasize a point. For example: Do not run with scissors.

■ Denote a new term at the place where it is defined in the

text.

■ Identify menu names, menu commands, and software

button names. Examples:

From the Help menu, select Contents.

Click OK.

Your suggestions are very important to us. They will help make our documentation more useful for you. Please e-mail comments about this guide to us at this address:

NBX_TechPubs_Comments@3com.com

Year 2000 Compliance

Please include the following information when you comment:

■ 3Com

■ Part Number 10038538-01 Rev B

■ Page number

Ethernet Power Source Guide

For information on Year 2000 compliance and 3Com products, visit the 3Com Year 2000 Web page:

http://www.3com.com/products/yr2000.html

3Com Support For information about these topics:

■ Product Troubleshooting

■ Software Downloads

■ Documentation

■ 3Com Service

use your web browser to access this web site:

http://support.3com.com/

and look for Network Telephony Products.

3Com Support 7

8 ABOUT THIS GUIDE

3COM ETHERNET POWER SOURCE

OVERVIEW

The 3Com Ethernet Power Source (EPS) provides power, over existing Ethernet wiring, to devices such as NBX telephones and 3Com wireless access points. The EPS can determine whether an Ethernet device can accept power over the Ethernet cable, and supply power only to those devices capable of accepting it.

The EPS:

■ Eliminates the need for AC outlets, Uninterrupted Power Supplies

(UPS), and AC/DC adapters

■ Can be used with the 3Com NBX 100 Communications System

business telephones and with 3Com’s wireless access points.

■ Is easy to add to your network

■ Allows you to manage power centrally

This chapter covers these topics:

■ Overview of the Ethernet Power Source

■ Front Panel Connections and LEDs

■ Rear Panel Connections

■ Guidelines for Network Configuration

10 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW

Overview The power source is designed for use with a standard

10BASE-T/100BASE-TX Ethernet network over standard TIA/EIA-568, Category 5 cable. The DC operating power for the data terminal units is fed through the unused pairs (7/8) and (4/5).

You can order the EPS in either of these models:

■ 12 Ethernet ports

■ 24 Ethernet ports

Features The EPS has the following hardware features:

■ Remote power feeding of Ethernet terminals

■ 12 or 24 ports of combined 10BASE-T/100 BASE-TX data and power

■ Shielded RJ-45 input/output connectors

■ Universal 85-264VAC 50/60Hz input

■ Power feeding over 7/8 and 4/5 spare twisted pairs of Category 5

UTP/STP cable

■ Independent overload and short-circuit protection for each port

■ Port status LED indicators

■ Power on/off command for each port

■ RS-232 monitoring and control serial port

■ FLASH memory for field firmware upgrades

■ Standard 19” 1.5U rack mounting with hardware

■ –24 VDC connector for an external DC power supply

Front Panel Connections and LEDs 11

Front Panel Connections and

Figure 1 and Figure 2 show the front-panel details of the 24-port and 12-port EPS units. The LEDs are described in later in this section.

LEDs

Figure 1 24-Port Ethernet Power Source — Front View

Note: Bottom row connectors are input ports (data only).

Top row connectors are output ports (data and power).

Figure 2 12-Port Ethernet Power Source — Front View

Note: Bottom row connectors are input ports (data only).

Top row connectors are output ports (data and power).

10/100BASE-TX

Data Input Ports

Both the 12-port (P/N 3C10220) and the 24-port (P/N 3C10222) versions of the EPS have two rows of 10BASE-T/100BASE-TX ports. The input ports, on the bottom row, are numbered from left to right (as you face the front of the unit). Each output port is located immediately above the input port to which it corresponds. You must use non crossover cables with both input and output ports.

The EPS input ports (bottom row) accept Ethernet data only (Tx/Rx) over the standard two wire pairs on an RJ-45 connector (Transmit on pins 1 and 2; Receive on pins 3 and 6).

12 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW

10/100BASE-TX

Data and Power

Output Ports

LEDs lists the lights (LEDs) on the front of the EPS and their states. For

The EPS output ports (top row) carry two kinds of transmissions:

■ Ethernet data on the standard two wire pairs on an RJ-45 connector

(Transmit on pins 1 and 2; Receive on pins 3 and 6)

and

■ DC power on the previously unused wire pairs of the RJ-45 connector

(-24VDC Return on pins 4 and 5 and -24VDC on pins 7 and 8)

The maximum segment length from the switch or hub to the Network Interface Card (NIC), including the EPS, is 100 m (328 ft.) using Category 5 twisted pair cable.

information on using the LEDs for problem solving, see “Solving EPS Problems” in Chapter 3.

Tab le 3 LED Behavior

Per-port Status Indications

Visual Indications (for Each Port) Port Status

Yellow LED Green LED Note: Do not automatically assume that a

yellow LED indicates a problem. For example, if the yellow LED for any port is ON, the EPS is not supplying power to that port/device, which may indicate that the device is not capable of accepting power via its Ethernet connection.

Off On ■ Normal condition. Port power is turned on

and a device is drawing power from the port.

Off Off ■ Main power supply is off.

■ Port power is turned off.

■ Both main power and port power are on,

but no device cable is plugged into the port.

On Off ■ Either the device that is plugged into the

port is incapable of accepting power via its Ethernet connection, or it has attempted to draw too much power from the port. The EPS has shut off the port power.

On On ■ An internal fault has occurred on this port.

The EPS has shut off the port power.

Front Panel Connections and LEDs 13

Tab le 3 LED Behavior (continued)

Per-port Status Indications

Unit Power Status Indications

AC LED DC LED

Off Off ■ No AC power supply is plugged into the AC

inlet and no redundant DC power supply is connected.

■ An AC power supply fault has occurred and

no redundant DC power supply is connected.

On Off ■ An AC power supply is plugged into the AC

inlet and no redundant DC power supply is connected.

■ An AC power supply is plugged into the AC

inlet, and a power failure has occurred on the redundant DC power supply that is connected.

Off On ■ An AC power supply is not plugged into AC

inlet and a redundant DC power supply is connected.

■ A main power supply fault has occurred

and a redundant DC power supply is connected.

On On ■ An AC power supply is plugged into AC

inlet

and

■ A redundant DC supply is connected.

Self-Test Indications

TEST LED

Off Normal condition

On Self-test routine is in progress

14 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW

Rear Panel

Figure 3 shows the EPS rear panel.

Connections

Figure 3 Ethernet Power Source — Rear Panel

DC INPUTS: 24Vdc/16Amp max.

CONSOLE PORT

9600, 8, 1, N

ONLY FOR USE WITH SPECIFIED

POWER SUPPLY.

REFER TO INSTRUCTIONS MANUAL.

Power Source Unit

P/N ..................

S/N ..................

Information Label To facilitate reporting any future problem, record here the Part Number

(P/N) and Serial Number (S/N) of the EPS from the unit information label on the rear panel.

■ Part number: ______________________

■ Serial number: _____________________

Console Port Use the Console Port to connect a remote (or local) terminal and perform

remote (or local) management. This port does not carry Ethernet traffic.

The Console Port uses a standard null modem cable. The port settings are fixed and have these values:

■ Baud Rate: 9600

SUPPLY DATA

100-120/200-240 60/50

Caution: Shock Potential. Disconnect the Power Before Servicing.

Hz A

3/1.5

■ Data Bits: 8

■ Parity: None

■ Stop Bit(s): 1

If you are upgrading the firmware on the EPS using a local computer connected by a null modem cable, the upgrade program configures the communications port that you select on your computer (COM1 is the default) to match these settings.

You can obtain the firmware upgrade program and instructions for using it from this web site:

http://support.3com.com/

Look for the Network Telephony Products area.

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