Boca Net-8 User manual

8-PORT

E

THERNET

N

ETWORK

BOCA NET-8 ETHERNET KIT

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

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You Begou Beg

ou Begou Beg

ou Begin yin y

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in your Installaour Installa

our Installaour Installa

our Installationtion

tiontion

tion

The product you have purchased is designed

to be easily installed with most IBM PC or

compatible systems. Many products have

large, easy-to-read legends to allow for the

easy configuring of the product. This

installation manual contains detailed

instructions. Most included software has automatic installation

programs to place the software correctly onto your computer.

However, as all computers are configured differently, you may

be required to perform some basic DOS or Windows tasks. If

you are not familiar with basic DOS commands such as DIR,

CD, or EDIT, you should check your DOS manual, or seek

assistance from you local computer dealer to install the

product.

HoHo

How to getw to get

w to getw to get

w to get TT

TT

Technicalechnical

echnicalechnical

echnical AssistanceAssistance

AssistanceAssistance

Assistance

The dealer that you purchased this

product or your computer from is the first

place you should go for technical

assistance. The dealer is usually the most

qualified source of help, and is most

familiar with your system and how this product should be

installed. Many dealers have customer service and technical

support programs, with varying levels of support offered,

depending on your needs and computer knowledge.

PleasePlease

Please

contact the dealer first whenever a prcontact the dealer first whenever a pr

contact the dealer first whenever a problem occurs.oblem occurs.

oblem occurs.oblem occurs.

oblem occurs.

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

If yIf y

If your Dealer Can’our Dealer Can’

our Dealer Can’our Dealer Can’

our Dealer Can’tt

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t Assist yAssist y

Assist yAssist y

Assist youou

ouou

ou

If you can’t get assistance from your dealer, the manufacturer

provides varying levels of technical assistance as summarized

on the opposite page.

The Standard Free Technical Support number is for quick

answers to specific inquiries on product features and technical

questions (call 561-241-8088561-241-8088

561-241-8088561-241-8088

561-241-8088; M-F, 8 am to 6:30 pm EST). Direct

access to technical support representatives is provided on a

limited basis. If you require immediate attention or in-depth

help with the installation of the product, please call our 900-

priority support number for service. This number gives you

immediate access to senior-level technicians. The number is

900-555-4900900-555-4900

900-555-4900. You will be charged $2.00 per minute. The

charges will appear on your next phone bill.

Damaged or Missing ItemsDamaged or Missing Items

Damaged or Missing Items

We use many world-class quality assurance programs to ensure

the product you purchased is of the highest caliber. Sometimes,

however, a component may be missing from the box, or is

damaged or corrupt in some way. If this happens, immediately

return the entire package to your place of purchase so you may

exchange it for a new one. Your dealer should be able to

provide you with an exchange far more quickly than by

contacting us directly. If for some reason you are unable to

return the product directly to its place of purchase, refer to the

“Servicing Your Product” and “Warranty” sections in this

manual for instructions.

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On-Line SupporOn-Line Suppor

On-Line Support!t!

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CompuServeCompuServe

CompuServe

: GO BOCA: GO BOCA

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[email protected]

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.bocaresearch.com

Boca BBSBoca BBS

Boca BBS

561-241-1601561-241-1601

561-241-1601

Priority ServicePriority Service

Priority Service

900-555-4900900-555-4900

900-555-4900

($2 per minute)($2 per minute)

($2 per minute)

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Technical Supportechnical Support

echnical Supportechnical Support

echnical Support

561-241-8088561-241-8088

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AutomatedAutomated

Automated

Fax RetrievalFax Retrieval

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Support FaxSupport Fax

Support Fax

561-997-2163561-997-2163

561-997-2163

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

ContentsContents

Contents

Part I:Part I:

Part I: Introduction and Package ContentsIntroduction and Package Contents

Introduction and Package ContentsIntroduction and Package Contents

Introduction and Package Contents..........

..........

.....

88

8

Part II:Part II:

Part II: The BOCA NET-8 HubThe BOCA NET-8 Hub

The BOCA NET-8 HubThe BOCA NET-8 Hub

The BOCA NET-8 Hub

Section One: InstallationSection One: Installation

Section One: Installation ........................................................................

........................................................................

.................................... 1414

1414

14

Section Two: Network ConfigurationSection Two: Network Configuration

Section Two: Network Configuration..........................

..........................

............. 1515

1515

15

2.1 Small Stand-Alone Network2.1 Small Stand-Alone Network

2.1 Small Stand-Alone Network ..................................

..................................

................. 1515

1515

15

2.2 Cascaded Network2.2 Cascaded Network

2.2 Cascaded Network........................................................................

........................................................................

.................................... 1616

1616

16

Section Three: Cabling CharacteristicsSection Three: Cabling Characteristics

Section Three: Cabling Characteristics ......................

......................

........... 1818

1818

18

3.1 Cable Type3.1 Cable Type

3.1 Cable Type ....................................................................................................

....................................................................................................

.................................................. 1818

1818

18

3.2 Pin Assignments3.2 Pin Assignments

3.2 Pin Assignments ..............................................................................

..............................................................................

....................................... 1818

1818

18

3.3 Crossover Function3.3 Crossover Function

3.3 Crossover Function......................................................................

......................................................................

................................... 1919

1919

19

3.4 Straight-Through Wiring3.4 Straight-Through Wiring

3.4 Straight-Through Wiring................................................

................................................

........................ 2020

2020

20

3.5 Crossover Wiring3.5 Crossover Wiring

3.5 Crossover Wiring ............................................................................

............................................................................

...................................... 2020

2020

20

Part III:Part III:

Part III: The 10Base-T Network CardThe 10Base-T Network Card

The 10Base-T Network CardThe 10Base-T Network Card

The 10Base-T Network Card

Section One: InstallationSection One: Installation

Section One: Installation ............................................................................

............................................................................

...................................... 2121

2121

21

1.1 Inserting the Adapter1.1 Inserting the Adapter

1.1 Inserting the Adapter ................................................................

................................................................

................................ 2222

2222

22

1.2 Adapter Configuration1.2 Adapter Configuration

1.2 Adapter Configuration ............................................................

............................................................

.............................. 2525

2525

25

Single BoardSingle Board

Single Board ................................................................................................

................................................................................................

................................................ 2525

2525

25

Multiple BoardMultiple Board

Multiple Board ..........................................................................................

..........................................................................................

.............................................2525

2525

25

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Section Two: ConfigurationSection Two: Configuration

Section Two: Configuration ..................................................................

..................................................................

................................. 2626

2626

26

2.1 Driver Support2.1 Driver Support

2.1 Driver Support ........................................................................................

........................................................................................

............................................ 2626

2626

26

2.2 Installation Notes2.2 Installation Notes

2.2 Installation Notes ..............................................................................

..............................................................................

....................................... 2626

2626

26

2.3 Configuration2.3 Configuration

2.3 Configuration ............................................................................................

............................................................................................

.............................................. 3232

3232

32

2.4 Windows 95 Driver Installation2.4 Windows 95 Driver Installation

2.4 Windows 95 Driver Installation ............................

............................

.............. 3232

3232

32

Part IVPart IV

Part IV::

::

:TT

TT

Trr

rr

roubleshootingoubleshooting

oubleshootingoubleshooting

oubleshooting

1.1 BOCA NET-8 Hub1.1 BOCA NET-8 Hub

1.1 BOCA NET-8 Hub ........................................................................

........................................................................

.................................... 3535

3535

35

1.2 10Base-T Network Card1.2 10Base-T Network Card

1.2 10Base-T Network Card ....................................................

....................................................

.......................... 3838

3838

38

Part VPart V

Part V::

::

:AppendicesAppendices

AppendicesAppendices

Appendices

Appendix A: SpecificationsAppendix A: Specifications

Appendix A: Specifications................................................................

................................................................

................................ 4242

4242

42

Appendix B: Pin AssignmentsAppendix B: Pin Assignments

Appendix B: Pin Assignments..........................................................

..........................................................

............................. 4444

4444

44

Appendix C:Appendix C:

Appendix C:

NET.CFG Options for NetWareNET.CFG Options for NetWare

NET.CFG Options for NetWare ....................

....................

..........

4545

45

Appendix D: Installing Boot ROMsAppendix D: Installing Boot ROMs

Appendix D: Installing Boot ROMs......................................

......................................

................... 4848

4848

48

Appendix E: FCC ComplianceAppendix E: FCC Compliance

Appendix E: FCC Compliance ......................................................

......................................................

........................... 5050

5050

50

Appendix F: Servicing Your Boca ProductAppendix F: Servicing Your Boca Product

Appendix F: Servicing Your Boca Product ..........

..........

..... 5151

5151

51

Appendix G: WarrantyAppendix G: Warranty

Appendix G: Warranty ....................................................................................

....................................................................................

.......................................... 5353

5353

53

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8

BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

PP

PARAR

ARAR

ART I: IntrT I: Intr

T I: IntrT I: Intr

T I: Introduction and Poduction and P

oduction and Poduction and P

oduction and Pacac

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ackage Contentskage Contents

kage Contentskage Contents

kage Contents

Congratulations on purchasing the BOCA NET-8 Ethernet

kit, which provides everything you need for your network

in one box. Our compact hub, which fits conveniently on

the corner of a desk is fully compliant with IEEE 802.3

standards. Its highly integrated single-chip solution

constantly monitors signal quality ensuring reliability of

your network reliability.

In addition, your 10Base-T Ethernet cards get you started

in connecting your ISA bus-based (or compatible) systems

to an Ethernet network. The 10Base-T card features an

RJ45 connector for easy connection to the supplied 8-port

via twisted-pair connector cables from Belkin (supplied).

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A NETA NET

A NET-8:-8:

-8:-8:

-8:

• High-performance, highly integrated one-chip solution from

Advanced Micro Devices.

• The 8-port concentrator allows you to connect up to eight nodes

using unshielded twisted-pair cabling.

• A crossover switch for “cascading” multiple units to support

flexible growth.

• Status LEDs monitor status and operation at all times.

• Automatic partitioning disables ports that experience collisions

and automatically reconnects those ports when the error

condition is cleared.

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• Compliant with ISO/ANSI IEEE 802.3 specifications

• High-performance, highly integrated one-chip solution

• On-board support for connecting to a 10Base-T network.

• Designed to work with 286, 386, 486, and Pentium-based

systems.

• Plug and Play compatible (ISA Plug and Play, v. 1.0a)

• Full-duplex capability with a full-duplex hub (not supplied)

• Jumperless adapter—all features such as interrupt channel and

I/O address are software-selectable.

• Easy installation and maintenance.

• Uses existing NE2000 drivers—no need to install new drivers.

• Low-cost solution for networks requiring 10Base-T or 10Base2

connection.

• One link/receive (GREEN) status LED indicator and one

transmit (RED) status LED indicator.

• NE2000/NE2000+ compatible.

IntrIntr

Introductionoduction

oductionoduction

oduction

Part I: Introduction and

Package Contents

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

Functional DescrFunctional Descr

Functional Description fiption f

iption fiption f

iption for the BOCor the BOC

or the BOCor the BOC

or the BOCA NETA NET

A NETA NET

A NET-8-8

-8-8

-8

The BOCA NET-8 is an implementation of an IEEE 802.3/

Ethernet repeater or hub. It provides eight 10Base-T ports in a

compact package. The BOCA NET-8 complies with the full set

of repeater basic functions as defined in section 9 of ISO 8802.3

(ANSI/IEEE 802.3c). These functions are defined below:

RepeaRepea

Repeater Functionter Function

ter Functionter Function

ter Function

If any single network port senses the start of a valid packet on

its receive lines, then the BOCA NET-8 will re-transmit the

received data to all other enabled network ports.

Signal RegeneraSignal Regenera

Signal Regenerationtion

tiontion

tion

When re-transmitting a packet, the BOCA NET-8 ensures that

the outgoing packet complies with the 802.3 specification in

terms of preamble structure, voltage amplitude, and timing

characteristics.

JJ

Jaa

aa

abber Locbber Loc

bber Locbber Loc

bber Lockup Prkup Pr

kup Prkup Pr

kup Protectionotection

otectionotection

otection

The BOCA NET-8 implements a built-in jabber protection

scheme to ensure that the network is not disabled due to the

transmission of excessively long data packets.

Collision HandlingCollision Handling

Collision Handling

The BOCA NET-8 will detect and respond to collision

conditions as specified in 802.3. It will also protect the network

from an excessive duration of, or frequent collisions by

“partitioning” the offending port from the rest of the network.

Once a port is partitioned, the data received from that port will

not be repeated. However, any other data on the network will

be re-transmitted on that port.

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1111

11

If the collisions that cause the partitioning cease, the port will

be re-connected to the rest of the network.

The status of the partitioning scheme can be checked at any

time by moving the LNK/PRT switch on the front of the BOCA

NET-8 to the PRT position. If any ports are currently

partitioned, the corresponding LED will come ON.

LinkLink

Link TT

TT

Testest

estest

est

The BOCA NET-8 implements the Link test function as

specified in the 802.3 10Base-T standard. It transmits Link test

pulses to any port after that port’s transmitter has been inactive

for a short period of time. The device connected to the port will

respond in the same manner.

The Link Status can be viewed on the LEDs of the BOCA NET-8

when the LNK/PRT switch is in the LNK position. If a

successful link has been established, the corresponding LED

will be ON.

PP

Polarolar

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olarity Reity Re

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The BOCA NET-8 automatically detects and adjusts to reversed

polarity of received data.

IntrIntr

Introductionoduction

oductionoduction

oduction

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

FRONT VIEW OF BOCA NET-8

REAR VIEW OF BOCA NET-8

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Contents ofContents of

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10Base-T Network Cards (2)

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The BOCA NET-8 Hub

installation guide

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RJ-45 Belkin 15’ cables (2)

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

PP

PARAR

ARAR

ART II:T II:

T II:T II:

T II: The BOCThe BOC

The BOCThe BOC

The BOCA NETA NET

A NETA NET

A NET-8 Hub-8 Hub

-8 Hub-8 Hub

-8 Hub

Section One: InstallaSection One: Installa

Section One: Installationtion

tiontion

tion

1. Connect the appropriate end of the power cord to the front of

the BOCA NET-8 (marked 9VAC) and insert the remaining

end to any conveniently accessible wall outlet.

2. Check the front panel LEDs. If the power (PWR) LED is not

ON, turn to

Part IV: Troubleshooting

.

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SectionSection

Section TT

TT

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ork Confk Conf

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tiontion

tion

The BOCA NET-8 is intended to connect multiple personal

computers (stand-alone) and/or other concentrators to an

Ethernet star topology network.

2.1 Small Stand-Alone Netw2.1 Small Stand-Alone Netw

2.1 Small Stand-Alone Networor

oror

orkk

kk

k

A single BOCA NET-8 can support a maximum of eight nodes,

one per port. Each device is connected directly to the twisted-

pair port (RJ-45 connector) via a twisted pair link segment (RJ-

45 cable).

If the Ethernet adapter in any given machine in the stand-alone

network does not have an RJ-45 connector, a transceiver may be

connected to interface the adapter to an RJ-45 connector. The

other end of the transceiver is then connected to an RJ-45 port

on the concentrator with a twisted-pair link segment (RJ-45

cable). In the example below, work station number 8, with an

Ethernet adapter without an RJ-45 connector, requires a

transceiver.

NOTE: Maximum RJ-45 cabling distance is 100NOTE: Maximum RJ-45 cabling distance is 100

NOTE: Maximum RJ-45 cabling distance is 100

meters (328 feet).meters (328 feet).

meters (328 feet).

10Base-T

Transceiver

Server Workstations

Twisted-Pair

Link Segments

(Max. 328'/100m)

NetwNetw

Network Configurationork Configuration

ork Configurationork Configuration

ork Configuration

Part II:The BOCA NET-8

Hub

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

2.2 Cascaded Netw2.2 Cascaded Netw

2.2 Cascaded Networor

oror

orkk

kk

k

The star network may be expanded to a maximum of 91

stations through “cascading”. This amounts to 3 levels of

concentrators as shown on the next page. The firstfirst

firstfirst

first is the main

concentrator. One of its eight ports is connected to a network

card in the server. The remaining 7 ports are connected to 7

concentrators. This makes up the secondsecond

secondsecond

second level. Six of the 7

concentrators have 7 ports available which are connected to 7

workstations for a total of 42 stations on Level 242 stations on Level 2

42 stations on Level 242 stations on Level 2

42 stations on Level 2.

Seven ports on the remaining concentrator are connected to 7

additional concentrators. This makes up the thirdthird

thirdthird

third level. Seven

workstations may be connected to each of these concentrators

for a total of 49 stations on Level 349 stations on Level 3

49 stations on Level 349 stations on Level 3

49 stations on Level 3. 49 on Level 3 and 42 on

Level 2 yield a total of 91 stations. See diagram on following

page.

When cascading from one BOCAWhen cascading from one BOCA

When cascading from one BOCA NETNET

NETNET

NET-8 to a second-8 to a second

-8 to a second-8 to a second

-8 to a second

BOCABOCA

BOCA NETNET

NETNET

NET-8, set port 8 on the first BOCA-8, set port 8 on the first BOCA

-8, set port 8 on the first BOCA-8, set port 8 on the first BOCA

-8, set port 8 on the first BOCA NETNET

NETNET

NET-8 to the-8 to the

-8 to the-8 to the

-8 to the

non-X position Use a straight-through cable from port 8non-X position Use a straight-through cable from port 8

non-X position Use a straight-through cable from port 8

on the first BOCAon the first BOCA

on the first BOCA NETNET

NETNET

NET-8 to any one port (1-7) on the-8 to any one port (1-7) on the

-8 to any one port (1-7) on the-8 to any one port (1-7) on the

-8 to any one port (1-7) on the

second BOCAsecond BOCA

second BOCA NETNET

NETNET

NET-8.-8.

-8.-8.

-8.

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1717

17

777777

(7 x 6 = 42)

(91)

LEVEL 1

(7 x 7 = 49)

Server with

network

card

LEVEL 2

(7)

LEVEL 3

NOTE: Maximum RJ-45 cabling distance is 100 meters (328 feet).NOTE: Maximum RJ-45 cabling distance is 100 meters (328 feet).

NOTE: Maximum RJ-45 cabling distance is 100 meters (328 feet).

When connecting concentrators

there can be no more than 4

concentrators between any 2

workstations.

The diagram shown is the

maximum allowable configuration.

The system can have only one set

of Level 3 concentrators.

This is only a sample configuration.

Other configurations are possible.

NetwNetw

Network Configurationork Configuration

ork Configurationork Configuration

ork Configuration

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BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

SectionSection

Section ThrThr

ThrThr

Three: Caee: Ca

ee: Caee: Ca

ee: Cabling Characterbling Character

bling Characterbling Character

bling Characteristicsistics

isticsistics

istics

3.1 Ca3.1 Ca

3.1 Cableble

bleble

ble TT

TT

Typeype

ypeype

ype

NOTE: If purchasing additional cables, read this section,NOTE: If purchasing additional cables, read this section,

NOTE: If purchasing additional cables, read this section,

otherwise, continue with Part III.otherwise, continue with Part III.

otherwise, continue with Part III.

Cable: UTP (Unshielded Twisted Pair)

Type: 100 Ohm UTP

22-26 AWG (0.4-0.6 mm)

2 pairs minimum; category 3 or higher

Male Connector: 8-pin RJ-45

Distance: Maximum: 100m (328'); Minimum: .6m (2')

3.2 10Base-T Pin3.2 10Base-T Pin

3.2 10Base-T Pin AssignmentsAssignments

AssignmentsAssignments

Assignments

An Ethernet twisted pair link segment calls for two pairs of wires,

with each pair differentiated by color. Each twisted pair link

segment must have an RJ-45 male connector attached to both ends.

Pins 1 and 2 on the RJ-45 connector are for transmitting data while

pins 3 and 6 are for receiving data. See chart below:

Looking into the RJ-45 connector

on the network card

RJ-45 Assignment

1 Tx+

2 Tx-

3 Rx+

6 Rx-

Looking into the RJ-45 connector

on the BOCA NET-8

RJ-45 Assignment

1 Rx+

2 Rx-

3 Tx+

6 Tx-

Pin 1Pin 1

Pin 1 Pin 8Pin 8

Pin 8Pin 8

Pin 8

Bottom ofBottom of

Bottom of

plugplug

plug

This is theThis is the

This is the

concentrator schemeconcentrator scheme

concentrator scheme

for Ports 1-7.for Ports 1-7.

for Ports 1-7.

This is standard forThis is standard for

This is standard for

Ethernet devices . TheEthernet devices . The

Ethernet devices . The

BOCABOCA

BOCA NETNET

NETNET

NET-8 is crossed-8 is crossed

-8 is crossed-8 is crossed

-8 is crossed

over (except for port 8)over (except for port 8)

over (except for port 8)

88

8-pin RJ45-pin RJ45

-pin RJ45-pin RJ45

-pin RJ45

ConnectorConnector

Connector

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1919

19

* The “+” and “-” signs are used to represent the polarity of the

two wires that make up each wire pair.

NONO

NOTE:TE:

TE:TE:

TE: EacEac

EacEac

Each wirh wir

h wirh wir

h wire pair me pair m

e pair me pair m

e pair must be connected to the RJ-45 connectorust be connected to the RJ-45 connector

ust be connected to the RJ-45 connectorust be connected to the RJ-45 connector

ust be connected to the RJ-45 connectorss

ss

s

in a specifin a specif

in a specific oric or

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Two Ethernet 10Base-T devices can communicate only if the

transmitter on one device is connected to the receiver of the

other device. The 10Base-T specification suggests that the

crossover function be implemented in the concentrator itself.

On the BOCA NET-8, this crossover function is implemented in

all ports. However, the last port can be switched to straight-

through to simplify installation when cascading concentrators.

This switch is labelled “X” and located on the front of the

BOCA NET-8.

The BOCA NET-8 features internal cross-over for each port. So,

when a BOCA NET-8 port labelled with an “X” is connected to

a network card that does not feature internal crossover, then

straight-through wiring must be used.

When connecting two identical twisted-pair ports (that is, ports

that either BOTH support or NOT support the crossover

function), a crossover must be implemented in the wiring (see

3.5).

CabCab

Cabling Characteristicsling Characteristics

ling Characteristicsling Characteristics

ling Characteristics

9370.p65 1/28/99, 2:57 PM19

2020

20

BOCA NETBOCA NET

BOCA NET-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit-8 Ethernet Kit

-8 Ethernet Kit

3.4 Straight-Thr3.4 Straight-Thr

3.4 Straight-Throughough

oughough

ough WW

WW

Wirir

irir

iringing

inging

ing

If the twisted pair link segment is to connect two devices and

only one of the devices features an internal crossover, the two

pairs of wires must be straight-through:

STRAIGHTSTRAIGHT

STRAIGHT-THROUGH RJ-45 PIN ASSIGNMENTS-THROUGH RJ-45 PIN ASSIGNMENTS

-THROUGH RJ-45 PIN ASSIGNMENTS-THROUGH RJ-45 PIN ASSIGNMENTS

-THROUGH RJ-45 PIN ASSIGNMENTS

Device 1 Device 2

1 (Rx+) 1 (Tx+)

2 (Rx-) 2 (Tx-)

3 (Tx+) 3 (Rx+)

6 (Tx-) 6 (Rx-)

3.5 Cr3.5 Cr

3.5 Crossoosso

ossoosso

ossovv

vv

verer

erer

er WW

WW

Wirir

irir

iringing

inging

ing

If you are connecting two devices directly that do not

implement internal crossover, then the crossover must be

implemented in the wiring.

CROSSOVER RJ-45 PIN ASSIGNMENTSCROSSOVER RJ-45 PIN ASSIGNMENTS

CROSSOVER RJ-45 PIN ASSIGNMENTS

Device 1 Device 2

1 (+) 1 (+)

2 (-) 2 (-)

3 (+) 3 (+)

6 (-) 6 (-)

NOTE ON SIGNAL POLARITYNOTE ON SIGNAL POLARITY

NOTE ON SIGNAL POLARITY

If a receive data pair has the “+” and “-” signals unintentionally

reversed, the BOCA NET-8 automatically detects and adjusts

this reversal so the data path will function properly.

The assignments will vary if both areThe assignments will vary if both are

The assignments will vary if both are

“X”, or both are NOT “X”.“X”, or both are NOT “X”.

“X”, or both are NOT “X”.

9370.p65 1/28/99, 2:57 PM20

Boca NET-8 User manual

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