Cabletron Systems STHI manual RJ45 to DB25 Connector Pinout

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Operating Specifications

Shield continuity is maintained by contacts within the female RJ45 that contact the metallic casing of the male RJ45 on the STP lobe cable.

The COM port is a female RJ45 connector supporting EIA RS232C connections via cables with pinout configurations as specified in Figure 2-2 or Figure 2-3.


RJ45 Plug			Female 25 Pin D-Shell
8	1	13			1

		25		14

Transmit

Pin 1

Receive

Pin 4

Transmit

Signal Ground

Pin 5

Signal Ground

Data Carrier Detect

Pin 2

Pin 20

Data Terminal Ready

Pin 6

Clear to Send

Figure 2-2. RJ45 to DB25 Connector Pinout

RJ45 Plug

Female DB-9

Transmit	Pin 1	to	Pin 2	Receive
Receive	Pin 4	to	Pin 3	Transmit
Signal Ground	Pin 5	to	Pin 5	Signal Ground
Request to Send	Pin 7	to	Pin 7	Ready to Send
Clear to Send	Pin 8	to	Pin 8	Clear to Send

Figure 2-3. RJ45 to DB9 Connector Pinout

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Contents Sthi Intelligent Token Ring Stackable HUB USER’S Guide Page FCC Notice Cabletron Software Program License United States Government Restricted Rights Installation Requirements & SpecificationsIntroduction Troubleshooting Local ManagementAppendix a Tpim Specifications Appendix B Media Specifications Contents of This Manual Sthi OverviewSthi Overview Lanview LEDsRing Speed Fault Protection Lobe Port and Multiple Ring Out Port ConfigurationsTCU Ports Active Circuitry Daughter Board Upgrade KitMedia Type Connector 3 RI & RO PortsHub-By-Hub Bypass Control Automatic Beacon Recovery ProcessSupport for Passive MAU Workgroups Flash Downloads Improved Protection from BeaconingIP Address Discovery DAISY-CHAIN MAU Configuration Related Manuals Related ManualsGetting Help Local ManagementGetting Help General Networking Considerations Maximum Number of Stations on a RingGeneral Networking Considerations TemperatureInstallation Recommendations CrosstalkHubstack Interconnect Cables Operating SpecificationsOperating Specifications TCU and COM PortsRJ45 to DB25 Connector Pinout Cabletron Enterprise MIBs Supported MIB GroupsStandard MIBs Ring SpeedSafety Ring SequenceComputing Hardware Physical SpecificationsEnvironmental Requirements Installing the Sthi Unpacking the SthiAttaching the Strain Relief Bracket Installing the SthiStacking the Sthi Rack-Mounting the SthiWall-Mounting the Sthi Rack Mounting BracketsInstalling the Sthi Free-Standing Installations Wall-mounting the SthiTpim Installation Tpim InstallationFinishing the Installation Connecting the Sthi to the Power SourceLanview LED Signals Color ConditionLoss Of Power Trouble ResolutionTrouble Resolution Failure to Link on Enabled PortReset Button Reset ButtonReset Button Management FailureNvram Reset Switch Nvram Reset SwitchAccessing LM Local ManagementDumb Terminal Configuration Accessing LMMenu Parameter Setting Console Cable Configuration Entering LMInvoking Menu Options or Screen Commands Using LM ScreensUsing LM Screens Working with LM ScreensSetting or Modifying Fields Exiting the Local Management Interface SessionScreen Introductions Password Screen Main Menu Device Setup StatusScreen Hierarchy System LevelComponent Status Snmp TrapsChassis Status View Device StatisticsSystem Date and System Time System Level ScreenSystem Level Screen IP AddressSubnet Mask Enable IP Address DiscoveryRetry Interval Enable Beacon Recovery Number of RetriesSnmp Community Names Screen Locally Administered AddressSnmp Community Names Screen MAC AddressRead-only Access PolicyCommunity Name Read-writeSnmp Traps Screen Enable TrapsSnmp Traps Screen Trap DestinationChassis Status View Screen Screen Mode Screen CommandChassis Status View Screen Functions of the Chassis Status View ScreenMultiplexer Configuration Fields Port Configuration Fields Administrative ModeEach port field whether Tpim or TCU may be set as follows Ring OUT Enable Mode Operational Mode Each Ring port Tpim port or Ring Out TCU may be listed asComponent Status Screen Component Status ScreenNext and Previous Device Statistics Screen Device Statistics ScreenScreen Mode AccumulateKBytes Received Errors ReceivedFrames Received Beacon StatesRing Number Ports EnabledRing Status Stations on a RingBurst Errors Isolating Errors Fields GroupLine Errors AC ErrorsLost Frame Errors Internal ErrorsNon-Isolating Errors Group Frame Copied ErrorsSnmp Tool Screen Token ErrorsFrequency Errors Snmp Tool ScreenOID Prepend 3 GETGetnext StepCycles Walk9 SET Repeat Firmware Image DownloadsCtDLCommitRAMtoFlash Overview Twisted Pair Tpim PinoutsFiber Optic Tpim Specifications Fiber Optic Tpim SpecificationsParameter Typical Worst Case TPIM-F2 for Multimode FiberBudget TPIM-F3 for Single Mode Fiber Parameter Typical Minimum MaximumA-5 Unshielded Twisted Pair UTP UTP Cable CategoriesAttenuation Loss Cat Frequency Operating Electrical SignalUnshielded Twisted Pair UTP Per 100m @ ≥100m@ 4 Mbps @ 16 Mbps Shielded Twisted Pair STPShielded Twisted Pair STP CategorySTP Lobe Lengths Operational Attenuation perType Frequency 1000 m 1000 ft Mixed STP Cable TypesMax. Lobe Length Max. Drive Distance Type Mbps Single Mode and Multimode Fiber Optic CablingSingle Mode and Multimode Fiber Optic Cabling Total Maximum