3Com Hub manual Europe

Page 24

Here is a list of worldwide technical telephone support num- bers:

Country

Telephone Number

Country

Telephone Number

 

 

 

 

Asia, Pacific Rim

 

 

 

Australia

1 800 678 515

P.R. of China

10800 61 00137 or

Hong Kong

800 933 486

 

021 6350 1590

India

+61 2 9937 5085

Singapore

800 6161 463

Indonesia

001 800 61 009

S. Korea

 

Japan

0031 61 6439

From anywhere in S. Korea:

00798 611 2230

Malaysia

1800 801 777

From Seoul:

(0)2 3455 6455

New Zealand

0800 446 398

Taiwan, R.O.C.

0080 611 261

Pakistan

+61 2 9937 5085

Thailand

001 800 611 2000

Philippines

1235 61 266 2602

 

 

Europe

From anywhere in Europe, call: +31 (0)30 6029900 phone +31 (0)30 6029999 fax

Europe, South Africa, and Middle East

From the following countries, you may use the toll-free numbers:

Austria

0800 297468

Netherlands

0800 0227788

Belgium

0800 71429

Norway

800 11376

Denmark

800 17309

Poland

00800 3111206

Finland

0800 113153

Portugal

0800 831416

France

0800 917959

South Africa

0800 995014

Germany

0800 1821502

Spain

900 983125

Hungary

00800 12813

Sweden

020 795482

Ireland

1800 553117

Switzerland

0800 55 3072

Israel

1800 9453794

U.K.

0800 966197

Italy

1678 79489

 

 

 

 

 

 

24

Image 24
Contents OfficeConnect Dual Speed Hub 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Introduction Creating your Network Page Introduction Small Network With OfficeConnect HubCreating Your Network Dual Speed Hub 8-FrontPower Adapter socket Dual Speed Hub 8-RearBefore You Start Workstation ConnectionsTwisted Pair TP Cables Hub ConnectionsStacking the Units Together Rubber FeetStacking Clip Positioning Your Hub Securing Your HubConnecting Workstations and Other Equipment to Your Hub Connecting Another OfficeConnect HubFast Ethernet 100Mbps Configuration Rules Ethernet 10Mbps Configuration Rules Example of an Ethernet 10Mbps NetworkMaking the Connection to Another Hub Checking Hub ConnectionsSpot Checks Problem Solving Straight-through Cable/Crossover Cable Networking Terminology Dimensions and Standards Dimensions and Operating ConditionsStandards Environmental Statements End Of Life StatementRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité Online Technical Services 3Com Knowledgebase Web ServicesTechnical Support World Wide Web SiteSupport from Your Network Supplier Support from 3ComEurope North America Returning Products for Repair Country Telephone Number Fax Number3Com Corporation Limited Warranty Warranties Exclusive Disclaimer Electromagnetic Compatibility Wall mounting screw hole guide 142mm 5.6in Part No. DUA 1675-0AAA03 Published June

Hub specifications

3Com Hub: A Cornerstone of Early Networking Technology

The 3Com Hub represents one of the pioneering devices in the realm of computer networking. Developed by 3Com Corporation in the late 1980s, it played a significant role in facilitating communication within local area networks (LANs). As an essential component during the rise of networked computing, the 3Com Hub laid the groundwork for the development of more advanced networking technologies that followed.

One of the main features of the 3Com Hub is its ability to connect multiple devices within a network in a straightforward manner. Operating primarily at the data link layer (Layer 2) of the OSI model, the hub allows for the interconnection of computers, printers, and other network devices using twisted-pair Ethernet cables. Typically available in 8, 16, or 24 ports, it offered scalability to organizations as they expanded their networks.

The hub operates using Ethernet technology, which was evolving rapidly at the time. It effectively transmitted data packets by broadcasting signals to all connected devices. While this method is simple and efficient for smaller networks, it also means that bandwidth is shared among all devices. This mechanism could lead to collisions when multiple devices attempted to send data simultaneously, a common limitation during the era of hubs.

In terms of characteristics, the 3Com Hub is a plug-and-play device, meaning it requires no complex configuration. This ease of installation was particularly advantageous for organizations that were just beginning to adopt networking technologies. The hub also supported a variety of Ethernet standards, including 10BASE-T and 100BASE-T, allowing for flexible implementation as network requirements evolved.

3Com hubs were designed with durability in mind, with a robust chassis that could withstand the rigors of office environments. They typically featured LED indicators for power and link status, providing users with immediate feedback about the operation of the network. Although modern networking has moved toward switches and routers that provide greater efficiency and intelligence, the 3Com Hub remains an iconic representation of early networking solutions.

In conclusion, the 3Com Hub played a vital role during the formative years of computer networking, providing the foundation for many of the technologies that dominate today’s networks. While it may seem primitive in the context of advanced networking options available today, its influence on the development of LAN technologies is undeniable. As organizations continue to navigate the evolution of networking, the legacy of the 3Com Hub endures.