3Com 3C10220 manual Choosing a, Suitable Site

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20CHAPTER 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:

■Always follow the appropriate configuration practices for Fast Ethernet, including the 100-meter limit on total cable length.

■Locate the EPS so that you can connect cables easily.

■Locate cables away from sources of electrical noise such as:

■Radios, transmitters, or broadband amplifiers

■Power lines

■Fluorescent lighting fixtures

■Make sure that no water or moisture can enter the EPS case. The unit is not designed for outdoor use.

■Make sure that air can flow freely on all sides of the EPS for proper cooling. 3Com recommends that you provide a minimum of 25 mm (1 in.) clearance on each side of the unit.

■If you use more than one EPS and place them on a table or desk, do not place more than four units in a single stack. If you mount multiple EPS units in a rack, this limit does not apply.

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Contents 3Com Ethernet Power Source Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Troubleshooting List conventions that are used throughout this guide About this GuideConventions Documentation CommentsYear Compliance3Com Support About this Guide 3COM Ethernet Power Source Overview Fed through the unused pairs 7/8 and 4/5 Power source is designed for use with a standardOverview 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 SiteRack-mounting Standard 19-inch equipment racksUnit, as shown in Figure Repeat and for the other side of the EPSInstalling the Ethernet Power Source and END Devices RJ-45 Output Plug per Port DTE NIC Side RJ-45 Input Plug per Port Switch SideList the RJ45 input and output plugs per port Data Power SplitterCable Ethernet Power Source Access PointWiring Closet Patch Panel Premises 3Com WirelessInstalling the Ethernet Power Source and END Devices Solving EPS TroubleshootingProblems Solving EPS Problems Solving EPS Problems To resolve the problem Solving NBX Business Telephone ProblemsSolving NBX TelephoneSolving NBX Telephone Problems Solving Wireless Access Point Problems Wiring, hubs, and switches Troubleshooting Safety Information Important Safety Connect it to an AC outlet power supplyInformation 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