3Com NJ90 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 Swit ch http: //www.3com.com/ http: //www.3com.com/p roductreg 150000038600A R01 Published February 2003[...]

3Com Corpora tion 5500 Great Ameri ca Parkway Santa C lara, C alifornia 95052-81 45 U.S.A. Copyri ght © 2003 3Com Co rporation. All rights reserved. No part of this docum entation may be reprodu ced in any form or by any m eans or used to make any de rivativ e work (s uch as translation, transform ation, or adap tation ) withou t wri tten per miss[...]

Table of Contents Contents 1. NJ90 P ackage Conte nts 1 2. NJ90 Des cripti on 2 3. NJ90 I nst allatio n 3 Appendix A: NJ90 Specific ations 5 B: Wall Outlet Dim ensions 7 C: Setting u p the Power Suppl y 8 D: Setti ng up th e Network Cablin g at Yo ur Sit e 12 E: Troubl eshoot ing t he NJ90 13 F: Contacting Techn ical Support 14 Limited War ranty &a[...]

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1 NJ90 User Guide The 3Com Network Jack is a platform that pr ovides connectivity at the edge of the netw ork infrastruct ure. The NJ90 Networ k Jack, is a member of this famil y of products. The NJ90 Net work Jack is a 4 -port, un- managed F ast Ethernet sw itch that fits into most standard data port openings. The NJ90 Network Jack quadruples port[...]

Installation Guide 2 2. NJ90 Description The following diagram shows the front view and the rear view of the NJ90 (see desc ripti ons be low) Figure 1 - NJ90 Featur e Descript ion 1 Four Switching Ports Allow up to four devices to be connected to the ne twork. 2 LED’s Indicates n etwork co nnection and activity status. Indicates NJ 90 power statu[...]

3. NJ90 Insta llation 3 3. NJ90 Installation 3.1 Ins tall th e NJ90 Netw ork Jack. 3.2 Set up the power supply 3.1 - Install the NJ90 Network Jack Figure 2 - NJ90 Insta llation Step 1: If the end of the netw ork cable from the wiring closet is terminated with a fem ale RJ -45 c onne cto r, us e the RJ-45 coup le r cable incl uded in the package to [...]

Installation Guide 4 Step 3: Mount th e NJ 90 Unit to th e Wal l or Cubi cle O utle t with the scr ews provided. 3.2 - Set up the power supply : Selec ting the p ower s cheme and in stalli ng it: See Appendix C: Set ting up the Power Supp ly (p.8). You can verify the NJ90 Netw ork Ja ck Installati on by checking the LED’s. LED Des cription (Lan) [...]

Appendix A: NJ9 0 Specifications 5 Appendix A: NJ90 Specifications The NJ90 is a 4-port, un-mana ged Fast Ethernet sw itch that fits int o most s tandard da ta port openings. The NJ90 allows up to four net- working d evices, such as com p uters , printers, Voice over IP (VoIP) telephon es, and scanners, to be connected to the network via one Ethern[...]

Installation Guide 6 Performance Auto-nego tiation Commu nication speed (10 Mb ps or 100 Mb ps) and dup lex mo de (full or half) is determined through auto-nego tiation with the attached devices. The NJ 90 attempts to negotiate the fastest connecti on possible (10 0 Mbps full-d uplex). Environme nt Operating temperatu re 32 º to 95 º F (0 º to 3[...]

Appendix B: Wall Outlet Dime nsions 7 Appendix B: Wall Outlet Dimensions Make sure the wa ll or cub icle opening where t he NJ90 is being installed complies with the NE MA-WD6 standard, as described below. Figure 4 - Wall Outlet (NEMA-WD6) Dimensions 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 fo llowing ways: 1. Over the network via an integrated switch th at supports Power over Ethe rnet. 2. Over the network vi a a multi-po rt Etherne t power suppl y. 3. Over the network via a single-port Eth ernet power sup ply. 4. Locally via a [...]

Appendix C: Sett ing up the Power Supply 9 2) Using a Multi-port Ethernet Power Supply To use a mult i-port Ethern et power supply, you mu st connec t the power s upply to your network, as shown in figure 6 on page 9. The mult i-port Ethernet po wer su pply from 3Com connects to an exis ting Et herne t o r Fast Ethern et i nfras tructu re with s ta[...]

Installation Guide 10 Figure 7 - Using a Si ngle-port Ethernet Power Supply 4) Using the 3Com Local Power Supply If your netw ork does not su pport Po wer over Ethernet, or if you are not using a sing le-port or mu lti-port Eth ernet po wer supply, you mus t purc hase a lo cal p ower s upply from 3Com . To use the local power supply, make sure you [...]

Appendix C: Sett ing up the Power Supply 11 Installation Instr uctions: 1. Plug the power cable into the N etwork Ja ck. 2. Ro ute the power cab le th rough the stai n relief fix ture. 3. Secure the local power sup ply and cable to the wall. 4. Plu g the L ocal Power Supply into the power source. NOTE : Completing t hese procedures in sequence will[...]

Installation Guide 12 Appendix D: Setting up the Network Cabling at Your Site The ne twork c abling at you r site (f rom t he wir ing c loset to the wa ll or cubicl e opening) ma y already b e in stalled. If it is not , install the cabling following these ge neral guideline s . CAUTIO N: It i s recommended that a professional cable in staller perfo[...]

Appendix E: Troublesh ooting the NJ90 13 Appendix E: Troubleshooting the NJ90 If you encount er prob lems wi th the NJ90: 1. Verify the NJ90 is receiving pow er by viewing the Power LED (it should b e lit). If the Power LE D is not lit, make sure: • The other end of the network cable is plugged into a syst em that prov ides Po wer ov er Ethern et[...]

Installation Guide 14 Appendix F: Contacting Technical Support 3Com provides easy access to technical support i nformation through a vari ety of services. This sect ion describes these services. Information contained in this section i s correct at t ime of public a- tion. F or the mos t recent i n form ation, 3Com recomm ends th at you access the 3[...]

Appendix F: Contacti ng Technical Support 15 Support from Your Network Supplier If you require add itional as sistan ce, cons ult your network sup plier. Many suppliers are authori z ed 3Com service partners who are qual - ified to provide a variet y of serv ices, including network p lanning, installation, hard ware maintenance, applic ation traini[...]

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17 The 3Com Corpora tion Limited Warra nty and the Other Services describe d in this docu ment su pe rsede any such information that may be contain ed with in your product user docum entatio n. This war ranty a ppli es to c usto mers located in the Unite d States, Aus- tralia, Canada (except Quebec), Ireland, New Zealan d, U.K., and ot her English [...]

Installation Guide 18 3Com ma kes no wa rranty or representati on that its s oftware pro d- ucts will meet Customer’s requiremen ts or work in combination with any hardware or softwa re products provided by third parties, th at the operation of the software produc ts wi ll be uninterrupted or e rror free, or th at al l defects in the sof tware pr[...]

LIMITED WA RRANTY 19 WARRANTIES EXCLUSIVE, WARR ANTY DISCLAIMER: TO THE FU LL EXTENT ALLOWED B Y LAW, THE FOREGOING WARR ANTIES AND REM- EDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OT HE R WARR ANTIE S, TERMS OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERA TION OF LAW , STATU TORY OR OT HERW ISE, INCLUD ING, WITH OUT LIMITA TION, WARRA[...]

Installation Guide 20 or the l imitation of liabili ty for deat h or per sonal injury , so the abov e limita tion s and excl usions ma y be limited in their applicat ion to you. Whe n the impli ed warran ti es are not allowed to be excluded in their entir ety, they will be limited to the d uration of the ap plicabl e writt en warra nty. Th is warr [...]

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3Com Corporation 5500 Great America Parkway, P.O. Box 58 145, Santa C lara, CA 950 52-8145 U.S.A. www.3com.com 150000038600A R01[...]