Cabletron Systems SEHI-32, SEHI-22, SEHI-24, SEHI-34 manual A-2

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TWISTED PAIR WIRING TABLES

Note: Pins 25 and 50 on Champ connector are not used.

Table A-1. Twisted Pair Wiring

from an SEHI-32/34 to a Punch Down Block

From		Into and Out of 50			Into Punch Down
SEHI-32/34		Pin Feeder Cable			Block

Port 12/24
	Pin	Pin			Pin
RX+	48	48	Violet/Green	RX+	A45	Violet/Green	RX+
RX-	23	23	Green/Violet	RX-	A46	Green/Violet	RX-
TX+	49	49	Violet/Brown	TX+	A47	Violet/Brown	TX+
TX-	24	24	Brown/Violet	TX-	A48	Brown/Violet	TX-
Port 11/23
	Pin	Pin			Pin
RX+	46	46	Violet/Blue	RX+	A41	Violet/Blue	RX+
RX-	21	21	Blue/Violet	RX-	A42	Blue/Violet	RX-
TX+	47	47	Violet/Orange TX+		A43	Violet/Orange TX+
TX-	22	22	Orange/Violet TX-		A44	Orange/Violet TX-
Port 10/22
	Pin	Pin			Pin
RX+	44	44	Yellow/Brown RX+		A37	Yellow/Brown RX+
RX-	19	19	Brown/Yellow	RX-	A38	Brown/Yellow RX-
TX+	45	45	Yellow/Gray	TX+	A39	Yellow/Gray	TX+
TX-	20	20	Gray/Yellow	TX-	A40	Gray/Yellow	TX-
Port 9/21
	Pin	Pin			Pin
RX+	42	42	Yellow/Orange RX+		A33	Yellow/Orange RX+
RX-	17	17	Orange/Yellow RX-		A34	Orange/Yellow RX-
TX+	43	43	Yellow/Green	TX+	A35	Yellow/Green TX+
TX-	18	18	Green/Yellow	TX-	A36	Green/Yellow TX-

Page A-2

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Contents 10BASE-T Intelligent Stackable HUB USER’S Guide Printed On Recycled Paper DOC Notice FCC NoticeCabletron Software Program License Cabletron SYSTEMS, INC Program License AgreementUnited States Government Restricted Rights Exclusion of Warranty Disclaimer of LiabilityTable of Contents Connecting to the Network InstallationTroubleshooting Local ManagementContents Appendix B Twisted Pair Wiring Tables A-1 Chapter Introduction Using this ManualSehi Overview Introduction Getting HelpRepeater Functionality Sehi FeaturesPolarity Detection and Correction Flash EEPROMsLanview LEDs Reset ButtonLocal Management Stackable CapabilitiesEpim Introduction Optional FeaturesRack Mount or Wall Mount Hardware Daughter Board Upgrade KitRelated Manuals HubSTACK Interconnect Cable Requirements Cable SpecificationsInsertion Loss LengthImpedance JitterTemperature DelayCrosstalk NoiseCable Type Attenuation Maximum Cable Length Fiber Optic Budget and Propagation DelayInstallation REQUIREMENTS/SPECIFICATIONS Thin-Net Network Requirements for the EPIM-C Module ConnectorsCable Type TerminatorsAUI Cable Requirements for the EPIM-A and EPIM-X Modules Network Port SpecificationsAUI Cable SEHI-32 and SEHI-34 Network Port Speciﬁcations SEHI-22 and SEHI-24 Network Port SpeciﬁcationsPin Champ Connector EPIM-T Installation REQUIREMENTS/SPECIFICATIONS Epim SpecificationsParameter Typical Worst Worst Case Typical Value Budget EPIM-F1 and EPIM-F2EPIM-F3 EPIM-F3Parameter Typical Minimum Maximum EPIM-C Connector TypeEPIM-A and EPIM-X EPIM-A and EPIM-X AUI PortTransceiver Requirements COMDelay Times JAM Delay Times Start of PacketsGeneral PreamblePower Supply Requirements Fault ProtectionOutput Min. Load Max. Load Max Power JAM OutputPhysical SafetyUnpacking the Sehi Installing the SehiStacking the Sehi Stacking the Sehi Disconnect SEH and Sehi Interconnect Cables At the OUT Port Attaching the Strain Relief BracketRack Mounting the Sehi Installing the Sehi in the RackWall Mounting the Sehi Shelf or Table-top Installation Free-Standing InstallationInstallation Connecting the Sehi to the Power Source Connecting to Network Ports, SEHI-22 and SEHI-24 Connecting the Sehi to the NetworkEPIM-2 Connecting to Network Ports, SEHI-32 and SEHI-34 EPIM-T Cross-over Switch Connecting a UTP Segment to an EPIM-TConnecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C EPIM-A Connecting an AUI Cable to an EPIM-AConnecting an AUI Cable to an EPIM-X On Position Toward Back Epim OFF Position Toward Front Finishing the InstallationInstallation CHECK-OUT Chapter TroubleshootingUsing Lanview CPU PWRUsing the Reset Button Troubleshooting CLNRCV LNKChapter Local Management Local Management Management Terminal Requirements Management Terminal Connection Console Cable ConﬁgurationMenu Function Selection Display Setup Management Terminal Setup ParametersGeneral Setup SetupSehi Local Management Local Management Accessing Local ManagementFeature Selection Screen Community Name Table Screen Local Management Using the Local Management ScreensCommunity Name AccessEditing the Community Name Field IP Address Conﬁguration ScreenPort Enable Override Default GatewaySetting the IP Address SubNet MaskSetting the Subnet Mask Using the Port Enable Override Setting the Default GatewayTrap Table Screen Exiting the Configuration ScreenSnmp Community Name Configuring the Trap TableTraps Trap IP AddressSnmp Tools Screen Exiting the Trap Table ScreenGet OID PrependSet Get NextRecall-OID WalkStep CyclesGetting the Next OID Getting Individual OIDsViewing Multiple OIDs Setting an OIDStepping Through OIDs Walking Through OIDsCycling Through OIDs Device Statistics Screen Exiting the Snmp Tools ScreenCRC Errors Errors ReceivedAlignment Errors Port Admin. StatusDisable Port Enable PortUpdate-Freq Port Seg. StatusSelecting the Appropriate Module/Port Using the Enable Port CommandExiting the Device Statistics Screen Using the Disable Port CommandTwisted Pair Wiring Tables Appendix a Twisted Pair Wiring TablesA-2 A-3 A-4 10BASE-T From Punch Down To RJ-45 Into Block Wallplate OfﬁceDrop Device A-6 A-7 Champ Down Block If Required Ethernet Device SEHI-32/34 Punch Wall PlateFigure A-1. Punch Down Block A-9 German Power Supply CordSpanish French