3Com 3C10220 manual Overview, Power source is designed for use with a standard

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10CHAPTER 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

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Contents 3Com Ethernet Power Source Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Troubleshooting Conventions About this GuideList conventions that are used throughout this guide Year DocumentationComments Compliance3Com Support About this Guide 3COM Ethernet Power Source Overview Overview Power source is designed for use with a standardFed through the unused pairs 7/8 and 4/5 2 Receive on pins 3 Front Panel Connections LEDs10/100BASE-TX Data and Power Output Ports LED BehaviorTest LED Rear Panel Console PortGuidelines for Network Configuration Sample topologies are shown in and Figure3COM Ethernet Power Source Overview Cabling Patch Panel Laptop with Wireless PCM Card 3COM Ethernet Power Source Overview Installing Ethernet Power Source END Devices Choosing a Suitable SiteUnit, as shown in Figure Rack-mountingStandard 19-inch equipment racks Repeat and for the other side of the EPSInstalling the Ethernet Power Source and END Devices List the RJ45 input and output plugs per port RJ-45 Input Plug per Port Switch SideRJ-45 Output Plug per Port DTE NIC Side Cable Power SplitterData Wiring Closet Patch Panel Premises Ethernet Power SourceAccess Point 3Com WirelessInstalling the Ethernet Power Source and END Devices Problems TroubleshootingSolving EPS Solving EPS Problems Solving EPS Problems Solving NBX To resolve the problemSolving NBX Business Telephone Problems TelephoneSolving NBX Telephone Problems Solving Wireless Access Point Problems Wiring, hubs, and switches Troubleshooting Safety Information Information Important SafetyConnect it to an AC outlet power supply Connected to an earthed grounded outlet’information de Sécurité ImportanteFrance et Pérou uniquement Sécurité ImportanteWichtige Sicher HeitsinformationenAppendix a Safety Information Technical Specifications for the Ethernet Power Source PIN AssignmentsPin Number Signal Function Pin Assignments3Com Corporation Limited Warranty Warranties Exclusive