Nortel Networks 70 Series Appendix B Cables and Connectors, 10BASE-T/100BASE-TX UTP Cable, RJ-45

Page 53

Appendix B

Cables and Connectors

This appendix provides specifications for cables and connectors used for the BayStack 70 Series 10/100 Ethernet Switch.

10BASE-T/100BASE-TX UTP Cable

For 10BASE-T and 100BASE-TX connections, use Category 5, 8-wire unshielded twisted pair cable. Configure your network according to the following guidelines:

Use a maximum segment length of 100 meters.

Use an 8-pin modular plug (RJ-45).

Table B-1 shows the RJ-45 connector pin assignments for MDI-X and MDI ports.

Table B-1.

RJ-45 Connector Pin Assignments

 

 

 

 

 

 

RJ-45

 

10BASE-T MDI-X

100 BASE-TX

MDI

10BASE-T/100BASE-TX Pin

(Uplink)

(Normal) Port

MDI-X Port

Ethernet Port

 

Port

 

 

 

8

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

RX+ (Receive)

RX+

TX+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

RX- (Receive)

RX-

TX-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

TX+ (Transmit)

TX+

RX+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

4

Not used

Common-Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminated (CMT)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

Not used

CMT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1882.6

 

 

6

TX- (Transmit)

TX-

RX-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

Not used

CMT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

Not used

CMT

 

206375-A

B-1

Image 53
Contents Installation and Reference for Copyright 1999 Nortel Networks Iii Statement of Conditions Restricted Rights LegendNortel Networks NA Inc. Software License Agreement 206375-A Contents Chapter Troubleshooting Figures 206375-A Tables Xii Purpose PrefaceHard-Copy Technical Manuals AudienceTechnical Solutions Center Telephone Number How to Get HelpPage Chapter Introduction BayStack 70 Series 10/100 Ethernet Switches OverviewFront Panel Physical DescriptionFront Panel of the BayStack 70-8T 10/100 Ethernet Switch RJ-45 10BASE-T/100BASE-TX Ethernet Ports LEDs Type Label Color Activity Description Description of Switch and Port Status LEDsRear Panel of the BayStack 70-24T 10/100 Ethernet Switch DC Power Adapter Model MAC Addresses in Information Table FeaturesMAC Address Quantities Model Buffer Size Buffer SizesModel External Power Adapter External Power AdaptersPage Benefits of Using Switching Technology Chapter Network ConfigurationTypes of Ethernet Switches Before Desktop SwitchingSegment Switching Before After Extending a Network Bridging 10 Mb/s Networks to 100 Mb/s Networks Bridging from 10BASE-T to 100BASE-TX NetworksPower Workgroup Connections Power WorkgroupsPackage Contents Chapter InstallationOperating Environment Power SpecificationsSet the switch on a desktop or any other flat surface Installing the SwitchAttach any additional devices to the ports in your switch Installing the Switch in a Rack Connecting Devices to the SwitchConnecting Power Verifying Installation BayStack 70-24T 10/100 Ethernet Switch LED Display Checking the Diagnostic DisplaysDescription of Switch and Port Status LEDs Page Using the LED Display Chapter TroubleshootingPage Table A-1 Technical Specifications Appendix a Technical SpecificationsProduct Specifications Electromagnetic Emissions Physical SpecificationsEnvironmental Specifications Electromagnetic Susceptibility Safety Agency ApprovalsPerformance Specifications Page Table B-1 RJ-45 Connector Pin Assignments Appendix B Cables and Connectors10BASE-T/100BASE-TX UTP Cable RJ-45Figure B-1. Straight-Through Twisted-Pair Cable Straight-Through and Crossover CablesNumbers IndexIndex-2