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®
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
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3Com Corporation 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 5400 Bayfront Plaza adaptation) without written permission from 3Com Corporation. Santa Clara, California 3Com Corporation reserves the right to revise this documentation and to make changes in content from time 95052-8145 to time without obligation on the part of 3Co
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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 Suita
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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
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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 g
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6 ABOUT THIS GUIDE Table 2 Text Conventions Description Convention 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” When you see the word “enter” in this guide, you must type and “type” something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.” Ke
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3Com Support 7 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.
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8 ABOUT THIS GUIDE
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3COM ETHERNET POWER SOURCE 1 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 Communicati
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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 p
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Front Panel Connections and LEDs 11 Front Panel Figure 1 and Figure 2 show the front-panel details of the 24-port and Connections 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 connec
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12 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW 10/100BASE-TX The EPS output ports (top row) carry two kinds of transmissions: Data and Power Ethernet data on the standard two wire pairs on an RJ-45 connector Output Ports (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
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Front Panel Connections and LEDs 13 Table 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. or 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. or An AC power supply is plugged into the AC inle
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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. SUPPLY DATA ONLY FOR USE WITH SPECIFIED CONSOLE PORT POWER SUPPLY. V~ Hz A 9600, 8, 1, N REFER TO INSTRUCTIONS MANUAL. 100-120/200-240 60/50 3/1.5 Power Source Unit Caution: Shock Potential. Disconnect P/N .................. the Power Before Servicing. S/N .................. Information Label To facilitate reporting
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Guidelines for Network Configuration 15 DC Power Socket The EPS has a 12-pin DC power socket for use only with an optional –24 VDC uninterruptible power supply (UPS). See the documentation that comes with your UPS. The EPS normally draws power from its internal power supplies. If an external DC supply is connected, an electronic circuit in the EPS draws power from either the internal or external supply to ensure steady power delivery to the devices attached to the EPS output ports. AC Power
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16 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW Figure 4 Sample EPS Topology with the NBX 100 Communications System NBX 100 Switch or Hub 3Com Ethernet Power Source Wiring Closet Patch Panel Premises Cabling Wall Jack
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Guidelines for Network Configuration 17 Figure 5 Sample Network Topology with a 3Com Wireless Access Point Servers Switch or Hub 3Com Ethernet Power Source 3Com Wireless Access Point Premises Wiring Closet Cabling Patch Panel Laptop with Wireless PCM Card
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18 CHAPTER 1: 3COM ETHERNET POWER SOURCE OVERVIEW
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INSTALLING THE 2 ETHERNET POWER SOURCE AND END DEVICES This chapter contains the information that you need to install and set up the Ethernet Power Source (EPS) and end devices. The following topics are described: Choosing a Suitable Site Rack-mounting the EPS Power-up Sequence Selecting the Correct Cables Power Splitter Cable Connecting an NBX Business Telephone Connecting a 3Com Wireless Access Point WARNING: Safety Information. Before you install or remove any components fr
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20 CHAPTER 2: INSTALLING THE ETHERNET POWER SOURCE AND END DEVICES Choosing a The EPS is suitable for an office environment. It can either be Suitable Site rack-mounted in a standard 19-inch equipment rack (for example, in a wiring closet or equipment room) or placed free-standing on a desk, table, or counter. Both the 12-port and 24-port EPS packages (3C10220 and 3C10222 respectively) contain a rack-mounting kit with two mounting brackets and six screws. When you select a site for the EPS:
