3Com 3CNJ90 manuale d’uso

NJ90 Network Jack User Guide 3CNJ90[...]

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User Guide NJ90 Network Jack 3CNJ90 4-port 10/100 Mbps Unmanaged Ethernet Switch http://www.3com .com/ http://www.3com.com/p roductreg 150000038600A R01 Published February 2003[...]

3Com Corporation 5500 Great America Parkway Santa Clara, C alifornia 95052-8145 U.S.A. Copyright © 2003 3Com Corporatio n. All rights reserved. No part of this documentation may be repro duced in any form or by any means or used to make any deriva tive work (s uch as translation, transformation, or adaptation ) without wri tten permis sion from 3C[...]

Table of Contents Contents 1. NJ90 Package Conte nts 1 2. NJ90 Descripti on 2 3. NJ90 Inst allation 3 Appendix A: NJ90 Specifications 5 B: Wall Outlet Dimensions 7 C: Setting up the P ower Supply 8 D: Setting up the Network Cabl ing at Your Site 12 E: Troublesho oting the NJ9 0 13 F: Contacting Technical Support 14 Limited Warranty & Regula tor[...]

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1 NJ90 User Guide The 3Com Network Jack is a plat form that provides connectivity at the edge of the network infrast ructure. The NJ90 Network Jack, is a member of this family of products. The NJ90 Network Jack is a 4-port, un-mana ged Fast Ethernet swit ch that fits into most standard data port openings. The NJ90 Network Jack quadruples port conne[...]

Installation Guide 2 2. NJ90 Description The following diagram shows the front view and the rear view of the NJ90 (see desc riptions be low) Figure 1 - NJ90 Feature Descrip tion 1 Four Switching Ports Allow up to four devices to be connected to the ne twork. 2 LED’s Indicates network connection and activity status. Indicates NJ90 power statu s. 3[...]

3. NJ90 Installatio n 3 3. NJ90 Install ation 3.1 Install th e NJ90 Network Ja ck. 3.2 Set up the power supply 3.1 - Install the NJ90 Network J ack Figure 2 - NJ90 Installati on Step 1: If the end of the network cable fro m the wiring closet is terminated with a fem ale RJ-4 5 connec tor, us e the RJ-45 couple r cable incl uded in the package to co[...]

Installation Guide 4 Step 3: Mount the NJ 90 Unit to the Wall o r Cubicle O utlet with the scre ws provided. 3.2 - Set up the power supply : Selecting the powe r scheme an d installi ng it: See Appendix C: Setting up the Pow er Supply (p.8). You can verify the NJ90 Network Ja ck Inst allation by chec king the LED’s. LED Descriptio n (Lan) •On -[...]

Appendix A: NJ90 Specificatio ns 5 Appendix A: NJ90 Specifications The NJ90 is a 4-port, un-mana ged Fast Ethernet switch tha t fits into most standard da ta port openings. The NJ90 allows up to four net- working devic es, such as computers, printe rs, Voice over IP (VoIP) telephones, and scanners, to be connected to the network via on e Ethernet p[...]

Installation Guide 6 Performance Auto-negotiation Communication speed (10 M bps or 100 Mbps) and duplex mode (full or half) is determined th rough auto-negotiation with the attached devices. The NJ90 attempts to negotiate th e fastest connection possi ble (100 Mbps full-duplex). Environment Operating temperature 32 º to 95 º F (0 º to 35 º C) S[...]

Appendix B: Wall Outlet Dim ensions 7 Appendix B: Wall Outlet Dimensions Make sure the wall or cubicle opening where the NJ90 is bei ng installed complies with th e NE MA-WD6 standard, as described below. Figure 4 - Wal l Outlet (NEMA-WD6) Dimen sions 2.8125" (71.44 mm) 3.28125" (83.31 mm) reference 1.750" (44.45 mm) Screw holes[...]

Installation Guide 8 Appendix C: Setting up the Power Supply Power to the NJ90 can be supplie d one of the followi ng ways: 1. Over the network via an integrated switch that supports Power over Ethernet. 2. Over the network via a multi- port Ethernet powe r supply. 3. Over the network via a single-port Ethernet power supply. 4. Loc ally via a 3Com [...]

Appendix C: Setting up the Power Supply 9 2) Using a Multi-port Ethernet Power Supply To use a multi-port Ethernet power su pply, you must connect the power supply to your netwo rk, as shown in figure 6 on pag e 9. The multi-port Ethern et power supply from 3Com connects to an existing Ethernet or Fast Eth ernet i nfrastruc ture wit h standa rd Cat[...]

Installation Guide 10 Figure 7 - Using a Si ngle-port Ethernet Po wer Supply 4) Using the 3Com Local Power Supply If your network does not su pport Po wer over Ethernet, or if you are not using a single-port or mu lti-port Ethern et power supply, you must purc hase a loc al power s upply from 3Com. To u se the loca l power supply, make sure you hav[...]

Appendix C: Setting up the Power Supply 11 Installation Instructions: 1. Plug the power cable into the N etwork Jack. 2. Route the power cable t hrough the stain relief fix ture. 3. Secure the local power supply and cable to the wall. 4. Plug the L ocal Power Su pply into the power source. NOTE: Completing these procedures in sequence will reduce i[...]

Installation Guide 12 Appendix D: Setting up the Network Cabling at Your Site The netwo rk cabling at y our site (fr om the wir ing closet to the wall or cubicle opening) ma y already be in stall ed. If it is not, install t he cabling follow ing these gener al guidelines. CAUTION: It is recommended that a professional ca ble installer perform these[...]

Appendix E: Troubleshooting the NJ90 13 Appendix E: Troubleshooting the NJ90 If you encounter prob lems with the NJ90: 1. Verify the NJ90 is receiving power by viewing the Power LED (it should be lit) . If the Power LED is not li t, make sure: • The other end of the networ k cable is plugged into a system that provide s Power over Ether n et acco[...]

Installation Guide 14 Appendix F: Contacting Technical Support 3Com provides easy access to technical support information through a variety of services. This sect ion describes these ser vices. Information contained in this section i s correct at time of publica- tion. For the mo st recent inform ation, 3Com recomm ends that you access the 3Com Cor[...]

Appendix F: Contact ing Technical Support 15 Support from Your Network Supplier If you require additiona l assistan ce, consult you r network supplier. Many suppliers are authorized 3Com service part ners who are qual- ified to pr ovide a va riety of serv ices, including network planning, installation, hard ware maintenance, applic ation training, [...]

Installation Guide 16[...]

17 The 3Com Corporation Limited Wa rranty and the Other Services described in this docu ment supe rsede any such information that may be contained with in your product user d ocumentation. This war ranty appl ies to cu stomers located in the United States, Aus- tralia, Canada (except Quebec), Irel and, New Zealand, U.K., and other English language [...]

Installation Guide 18 3Com makes no warranty or representation that its soft ware prod- ucts will meet Customer ’s requiremen ts or work in combination wit h any hardware or software products provided by third parties, that the operation of the software produc ts wi ll be uninterrupted o r error free, or that al l defects in the sof tware produ c[...]

LIMITED WARRANT Y 19 WARRANTIES EXCLUSIVE, WARRANTY DIS CLAIMER: TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARR ANTIES AND REM- EDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OT HER WARR ANTIES, TERMS OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION O F LAW, STATUTORY OR OTHERWISE, INC LUDING, WITHOUT LIMI TATION, WAR RANTIES , [...]

Installation Guide 20 or the limita tion of liab ility for de ath or per sonal injury , so the above limi tations and exc lusions m a y be limited in their applicat ion to you. When the impli ed warranti es are not allowed to be excluded in their entirety, they will be limited to the duratio n of the applicable written warra nty. This wa rranty gi [...]

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3Com Corporation 5500 Great Americ a Parkway, P.O. Box 58 145, Santa Clara , CA 95052-81 45 U.S.A. www.3com.com 150000038600A R01[...]