3C16702.
3C16702.book Page ii Tuesday, July 13, 1999 10:16 AM 3Com Corporation ■ 5400 Bayfront Plaza Copyright © 1999, 3Com Technologies. 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 adaptation) without written permission from 3Com Technologies.
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3C16702.
3C16702.book Page 5 Tuesday, July 13, 1999 10:16 AM INTRODUCTION Welcome to the world of networking with 3Com® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage. The OfficeConnect® product range from 3Com has changed this, bringing networks to the small office.
3C16702.book Page 6 Tuesday, July 13, 1999 10:16 AM CREATING YOUR NETWORK Ethernet Hub 16C—Front Alert LED Power LED Collision LED Port Status LEDs Network Utilization LEDs orange Alerts you to excessive network use or an isolated (partitioned) 10BASE-T port. green Indicates that the power supply to the hub is present. yellow Flashes each time a collision is detected on the network. Collisions are part of normal network operation. green/yellow Indicates the status of each port.
3C16702.book Page 7 Tuesday, July 13, 1999 10:16 AM Ethernet Hub 16C—Rear 8X COAX Uplink/Normal 1X 9X 16 POWER Power Adapter socket Only use the power adapter that is supplied with this OfficeConnect hub. Do not use any other adapter. 10BASE-T Coaxial port Can be used to connect your hub to other OfficeConnect hubs and equipment with 10BASE-2 (Coaxial) cabling. Uplink/Normal switch Sixteen 10BASE-T RJ-45 ports Affects the operation of port 16.
3C16702.book Page 8 Tuesday, July 13, 1999 10:16 AM 3 One ‘Straight-through’ 10BASE-T cable for every Before You Start workstation or piece of equipment. A ‘Straight-through’ cable is one where the pins of one connector are connected to the same pins of the other connector. 10BASE-T cables can be shielded or unshielded. We recommend you use shielded. The maximum length you can use is 100m (328ft). Your OfficeConnect hub comes with: ■ One power adapter for use with the OfficeConnect hub.
3C16702.book Page 9 Tuesday, July 13, 1999 10:16 AM To fit another unit: Stacking the Units together 1 Rest the second unit on top of the clip and align it with the front of the unit below. The Rubber Feet 2 Press down gently on the unit to secure it onto the clip, The four self-adhesive rubber feet prevent your hub from moving around on your desk. Only stick the feet to the marked areas at each corner of the underside of your hub if you intend to place the unit directly on top of the desk.
3C16702.book Page 10 Tuesday, July 13, 1999 10:16 AM Positioning Your OfficeConnect Hub Securing the OfficeConnect Hub When installing your OfficeConnect hub, ensure: There are two slots on the underside of the OfficeConnect hub which can be used for wall mounting. It is recommended that you mount the hubs with the LEDs facing upwards to prevent dust entering the cooling vents. ■ It is out of direct sunlight and away from sources of heat.
3C16702.book Page 11 Tuesday, July 13, 1999 10:16 AM The hub detects all port connections, so you can start using your network immediately. When you need more ports, simply add more OfficeConnect hubs. Connecting Workstations and Other Equipment to Your Hub If you are using port 16 to connect to a workstation, ensure the Uplink/Normal switch is set to Normal (out). WARNING: Please read the ‘Important Safety Information’ section before you start.
3C16702.book Page 12 Tuesday, July 13, 1999 10:16 AM Figure 3 Connecting Hubs Using 10BASE-2 (Coaxial) Correct Hub Connections Using 10BASE-2 (Coaxial) When using 10BASE-2 (Coaxial) cable, it is important that both ends of the segment are properly terminated with 50 Ohm terminators (end pieces). POW ER Only use 50 Ohm 10BASE-2 (Coaxial) cables and use a ‘Y’ piece for each hub. You can use ‘T’ pieces but ‘Y’ pieces provide optimum clearance of the other ports.
3C16702.book Page 13 Tuesday, July 13, 1999 10:16 AM Figure 4 Connecting Hubs Using 10BASE-T Correct Hub Connections Using 10BASE-T You can connect hubs together with 10BASE-T in a number of ways, but for simplicity we recommend the following method: 1 Starting from the bottom, connect port 16 of the lower POW ER hub to port 15 of the hub immediately above. Repeat for each hub (as shown in Figure 4).
3C16702.book Page 14 Tuesday, July 13, 1999 10:16 AM PROBLEM SOLVING The OfficeConnect hub has been designed to aid you when detecting and solving possible problems with your network. These problems are rarely serious; the cause is usually a disconnected or damaged cable, or incorrect configuration. If this section does not solve your problem, contact your supplier for information on what to do next. Link between two OfficeConnect hubs not working.
3C16702.book Page 15 Tuesday, July 13, 1999 10:16 AM Refer to Figure 5 below to compare the wiring of a straight-through and a crossover cable.
3C16702.book Page 16 Tuesday, July 13, 1999 10:16 AM NETWORKING TERMINOLOGY A Network is a collection of workstations (for example, IBM-compatible PCs) and other equipment (for example, printers), connected for the purpose of exchanging information or sharing resources. Networks vary in size, some are within a single room, others span continents. A Network Loop occurs when two pieces of network equipment are connected by more than one path.
3C16702.book Page 17 Tuesday, July 13, 1999 10:16 AM DIMENSIONS AND STANDARDS Dimensions and Operating Conditions 18 VA 61 BThU/hr power requirement Functional: ISO 8802/3 IEEE 802.3 Safety: UL 1950, EN 60950 CSA 22.2 #950 IEC 950 EMC: EN 55022 Class B† EN 50082-1 FCC Part 15 Class B†* ICES-003 Class B VCCI Class B† 228 mm (9.12 in.) 54.6 mm (2.1 in.) 0 to 40°C (32 to 105°F) operating temperature 0 to 90% (non-condensing) humidity Standards 960 g (2.1 lb) 185.4 mm (7.3 in.) + 15.2 mm (0.6 in.
3C16702.book Page 18 Tuesday, July 13, 1999 10:16 AM ENVIRONMENTAL STATEMENTS It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to: End Of Life Statement 3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components. ■ Establishing environmental performance standards that comply with national legislation and regulations.
3C16702.book Page 19 Tuesday, July 13, 1999 10:16 AM IMPORTANT SAFETY INFORMATION WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: ■ Exceptional care must be taken during installation and removal of the unit. ■ Only stack the OfficeConnect hub with other OfficeConnect units.
3C16702.book Page 20 Tuesday, July 13, 1999 10:16 AM WICHTIGE SICHERHEITSHINWEISE WARNHINWEIS: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen. Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen, bevor Sie das Geräts installieren oder ausbauen: ■ Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen.
3C16702.book Page 21 Tuesday, July 13, 1999 10:16 AM CONSIGNES IMPORTANTES DE SÉCURITÉ AVERTISSEMENT: Les avertissements présentent des consignes que vous devez respecter pour garantir votre sécurité personnelle. Vous devez respecter attentivement toutes les consignes. Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d’installer ou de retirer l’appareil: ■ Faites très attention lors de l'installation et de la dépose du groupe.
3C16702.book Page 22 Tuesday, July 13, 1999 10:16 AM TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This section describes these services. This service provides access to online support information such as technical documentation and software, as well as support options that range from technical education to maintenance and professional services. Information contained in this section is correct at time of publication.
3C16702.book Page 23 Tuesday, July 13, 1999 10:16 AM Support from Your Network Supplier Support from 3Com If you require additional assistance, contact your network supplier. Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.
3C16702.book Page 24 Tuesday, July 13, 1999 10:16 AM Here is a list of worldwide technical telephone support numbers: Country Telephone Number Country Telephone Number Asia, Pacific Rim Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines 1 800 678 515 800 933 486 +61 2 9937 5085 001 800 61 009 0031 61 6439 1800 801 777 0800 446 398 +61 2 9937 5085 1235 61 266 2602 P.R. of China 10800 61 00137 or 021 6350 1590 800 6161 463 Singapore S. Korea From anywhere in S.
3C16702.
3C16702.book Page 26 Tuesday, July 13, 1999 10:16 AM Returning Products for Repair Before you send a product directly to 3Com for repair, you must first obtain a Return Material Authorization (RMA) number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.
3C16702.book Page 27 Tuesday, July 13, 1999 10:16 AM 3Com Corporation LIMITED WARRANTY specifications. Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials.
3C16702.book Page 28 Tuesday, July 13, 1999 10:16 AM marked on the outside of the package, and sent prepaid and packaged appropriately for safe shipment, and it is recommended that they be insured or sent by a method that provides for tracking of the package. The repaired or replaced item will be shipped to Customer, at 3Com's expense, not later than thirty (30) days after 3Com receives the defective product.
3C16702.book Page 29 Tuesday, July 13, 1999 10:16 AM DISCLAIMER Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers, or the limitation of liability for personal injury, so the above limitations and exclusions may be limited in their application to you.
3C16702.book Page 30 Tuesday, July 13, 1999 10:16 AM ELECTROMAGNETIC COMPATIBILITY VCCI STATEMENT FCC STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
3C16702.book Page 31 Tuesday, July 13, 1999 10:16 AM 31 Wall mounting screw hole guide 142mm (5.6in.
Part No. DUA 1670-2AAA02 Published June 1999 3C16702.
