3Com 3C16411 - Baseline Dual Speed Hub User Manual - Page 2

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OW TO

Numbered elements in this diagram refer to numbered sections in the

text. These numbers, in bold, are used as references.

Front Panel

1 16 or 24 RJ-45 10/100 Ports

You can use these ports to connect 10BASE-T or 100BASE-TX devices

(workstations and other equipment) to the Baseline Dual Speed Hub. As

the ports are autosensing, the speed of the ports is determined

automatically when you connect your equipment.

WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets.

They cannot be used as standard traditional telephone sockets,

or to connect the unit to a traditional PBX or public telephone

network. Only connect RJ-45 data connectors, network

telephony systems, or network telephones to these sockets.

Either shielded or unshielded data cables with shielded or

unshielded jacks can be connected to these data sockets.

AVERTISSEMENT: Points d'accès RJ-45. Ceux-ci sont protégés

par des prises de données. Ils ne peuvent pas être utilisés comme

prises de téléphone conventionnelles standard, ni pour la

connection de l'unité à un réseau téléphonique central privé ou

public. Raccorder seulement connecteurs de données RJ-45,

systèmes de réseaux de téléphonie ou téléphones de réseaux à

ces prises.

Il est possible de raccorder des câbles protégés ou non protégés

avec des jacks protégés ou non protégés à ces prises de

données.

WARNHINWEIS: RJ-45-Porte. Diese Porte sind geschützte

Datensteckdosen. Sie dürfen weder wie normale traditionelle

Telefonsteckdosen noch für die Verbindung der Einheit mit

einem traditionellem privatem oder öffentlichem Telefonnetzwerk

gebraucht werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme

or Netztelefone an diese Steckdosen anschließen.

Entweder geschützte oder ungeschützte Buchsen dürfen an diese

Datensteckdosen angeschlossen werden.

Connect one end of the TP (twisted pair) cable to the RJ-45 port on the

Baseline Dual Speed Hub and the other end to the appropriate RJ-45 port

on the device. Use either shielded or unshielded data cables (with shielded

or unshielded jacks) to connect to the devices.

The equipment that is connected to the Baseline Dual Speed

Hub must not be set to operate in full duplex mode. It must be

set to operate in autonegotiate or half duplex mode.

10BASE-T

To connect 10BASE-T equipment, use 10BASE-T Category 3 or Category 5

unshielded or shielded (screened) 100 Ohm TP cable.

Category 5 cable should be used with this product in structured

wiring environments. This will ensure correct operation of all

ports at 10 Mbps or 100 Mbps.

Ethernet Network Configuration Rules

To remain within IEEE 802.3 10 Mbps Ethernet rules, the maximum length

of cable between the Baseline Dual Speed Hub and an attached device

must not exceed 100 m (328 ft). If you are connecting multiple hubs in

SE THE

ASELINE

UAL

series, ensure that there are no more than four 10 Mbps hubs between

any two devices on your network, as shown below.

100BASE-TX

To connect 100BASE-TX equipment, use 100BASE-TX Category 5

unshielded or shielded (screened) 100 Ohm TP cable.

Fast Ethernet Network Configuration Rules

To remain within IEEE 802.3 100 Mbps Fast Ethernet rules, the maximum

length of cable between the Baseline Dual Speed Hub and an attached

device must not exceed 100 m (328 ft). Ensure that there are no more

than two 100 Mbps hubs between any two devices on your network, and

that the total cable distance (A+B+C) between the two devices does not

exceed 205 m (672.4 ft), as shown below.

If you connect two Baseline Dual Speed Hubs together, the link

between them operates at 100 Mbps.

2 MDI Switch

This switch affects port 16 (3C16410) or port 24 (3C16411). Ports 1–15

(3C16410) or 1–23 (3C16411) are fixed as MDIX ports. Each can be

connected to a device with an MDI port (such as most workstations) using

a normal "straight through" TP cable. Port 16 or 24 is "switch selectable"

using the MDI switch:

MDIX

MDI

Unit 1

Unit 2

PEED

Out

In this position, port 16 or 24 is an MDIX port. It can be

connected to a device with an MDI port (such as most

workstations) using a normal "straight through" TP cable.

In this position, port 16 or 24 is an MDI port.

It can be connected to an MDIX port on a device (such as

another hub) using a normal "straight through" TP cable.

Set switch to

MDI (in)

Switch set to MDIX (out)

if port 24 used