Nortel Networks 60-24T, 60-12T manual Cable Assignments, Table B-1 RJ-45 Pin Descriptions

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Installation and Reference for the BayStack 60-12T/60-24T 10/100 Ethernet Hubs

Table B-1 describes the pin assignments.

	Table B-1.	RJ-45 Pin Descriptions

	Pin Number	Assignment (Station Ports	Assignment (Daisy-Chain Port,
	Pin Number	1 through 12 or 24)	other Devices)
		1 through 12 or 24)	other Devices)

1Input Receive Data +

2Input Receive Data -

3Output Transmit Data +

6	Output Transmit Data -
4, 5, 7, 8	Not used

Output Transmit Data + Output Transmit Data - Input Receive Data + Input Receive Data - Not used

Cable Assignments

You can use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable to connect to RJ-45 ports.

Use the following cable categories, depending on the type of Ethernet transmissions on your device.

•10 BASE-T - 100 Ohm Category 3, 4, 5 twisted pair

•100 BASE-TX - 100 Ohm Category 5 twisted pair

Figure B-2 shows schematics for straight-through and crossover twisted-pair cables.

	Straight-Through						Crossover
	(Hub)		(Adapter)			(Hub)		(Hub)
1	IRD+		1	OTD+	1	IRD+	1	IRD+

2	IRD-		2	OTD-	2	IRD-	2	IRD-

3	OTD+		3	IRD+	3	OTD+	3	OTD+

6	OTD-		6	IRD-	6	OTD-	6	OTD-

								9243EA

Figure B-2. Cable Schematics

B-2

206378-A

Image 38

Contents

Part No -A June Great America Parkway Santa Clara, CA Restricted Rights Legend Copyright 1999 Nortel NetworksTrademarks Statement of ConditionsIii Voluntary Control Council for Interference Vcci Statement Wichtige Sicherheitshinweise Nortel Networks NA Inc. Software License Agreement Vii Viii Contents Chapter Troubleshooting Figures Xii Tables Xiv Preface Before You BeginHard-Copy Technical Manuals How to Get HelpTechnical Solutions Center Telephone Number Product Features Chapter IntroductionFront Panel Product DescriptionAutosense Capability BayStack 60-12T Front Panel LED Descriptions Color Activity IndicationPort Partitioning Hardware and Environmental Requirements Rear PanelChapter Typical Applications Mixed 10 Mb/s and 100 Mb/s EnvironmentBasic Mixed Network Example of a Basic Mixed NetworkExpanded Mixed Network Example of an Expanded Mixed NetworkBridging Daisy-Chained HubsChapter Installation Package ContentsInstalling the Hub Mounting the Hub in a Standard 19 Equipment RackCable Types and MDI/MDI-X Modes Connecting the Hub To Other DevicesHub Port Connecting Device Mode Cable Type Connecting the Hub Through a RJ-45 Port Applying Power to the Hub Connecting the Hub Through the MDI PortState Indication Verifying Port StatusPort Status LED Descriptions Chapter Troubleshooting Verifying System OperationsSymptom Cause Solution Diagnosing Hub IndicatorsLED Indicators Description Appendix a Technical SpecificationsTable A-1 Product Specifications Internal Switching Specifications RJ-45 Ports Appendix B Cable and Connector InformationPort Assignments Cable Assignments Table B-1 RJ-45 Pin DescriptionsIndex Index-1Index-2