HP 2103R-CSDI manual Table A-17 X.21 DTE and DCE Cable Pinouts DB-15 15 Pin

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A-14 APPENDIX A: SPECIFICATIONS

X.21 DTE and DCE Serial Cable Pinouts

Table A-17 lists pinouts for:

■X.21 DTE synchronous serial cable (Part Number ERMX21-CAB)

■X-21 DCE synchronous serial cable (Part Number ERFX21-CAB)

Table A-17 X.21 DTE and DCE Cable Pinouts (DB-15)

15 Pin1		DTE DCE
15 Pin1	Signal	Direction
J2-1	Shield GND	—

J2-2	Transmit+	→
J2-9	Transmit-	→

J2-3	Control+	→
J2-10	Control-	→

J2-4	Receive+	←
J2-11	Receive-	←

J2-5	Indication+	←
J2-12	Indication-	←

J2-6	Timing+	←
J2-13	Timing-	←

J2-8	Circuit GND	—
Shield	—	—

1

Any pin not referenced is not connected.

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Contents Edge Router Module Installation Guide For Ethernet 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Iii Page Contents Configuring the Edge Router Module Monitoring Edge Router Module Operation Index Limited Warranty How to Use This Guide About this GuideIntroduction AudienceConventions List conventions used throughout this guideCommands Related Documents3Com Documents Cisco DocumentsInternational and Hughes LAN Systems, May Page Introduction LAN Product Overview Shows the architecture of each Edge Router module type Including Module FeaturesEdge Router IP/IPX Edge Router Module Features Ethernet LAN Edge Router Module Memory Configurations Feature Set Desktop Memory Type Page Installing the Edge Router Module Configure the Edge Router module InstallationFlowchart Precautionary ProceduresQuick Installation Router moduleCisco Systems Getting Started Guide Quick Installation Edge Router Module Installation Guide for Ethernet UnpackingVerifying Jumper Plug PositionsConfiguring DIP SwitchesIsolating the ONline Edge Router Module ConfiguringONcore Carrier DIP Parameters Switches Shows the ONcore carrier DIP switch location Enabling or Disabling Nvram ConfigurationIf the NV SEL DIP switch is To select a network Set the switches according to TableInstalling If you are installingONline Edge Router ModuleThis is called a hot swap To install the Edge Router module in an ONcore hubONcore Edge Installing the Edge Router Module in an ONcore Hub Close the ejectors Figure Opened and Closed Module EjectorsPage Router Module Overview ConfigurationManaged Terminal Attaching aManagement Selecting a Network Saving the Configuration HubConfiguring Carrier in aManaged ONcore This section contains the following topicsCarrier Default Settings Configuring the Carrier in a Managed ONcore Hub DMM DIP Nvram DIP Terminal to Auxiliary port Console Port Attaching a Terminal Cable to the Console Port Mini-DIN connector pinouts are provided in Appendix a Page Operation Module OperationMonitoring Edge Edge Router Module LEDs Following network management module commands Showing ModuleStatus Each LED is described in TableUsing the Show Module Command Syntax for the Show Module command isONline show module 6 verbose Port Command Ports Syntax for the Show Port command is Edge Router module installed in slot 1 of an ONcore hubONcore show port Page Troubleshooting Troubleshooting Troubleshooting Network Connectivity Problems Problems Correcting OperatingMalfunctions MalfunctionsSeconds, and then power it on Specifications General Specifications ElectricalEnvironmental Specifications Mechanical Specifications5006C-FT Cables when you install all equipment Cable PinoutsOpenHub Management Cable Part Number OHPMGT-CAB OpenHub Management Cable has aDTR CTS TXD CTS Cable Pinouts DTE DCE Ltst CS+ SCTE+ Table A-17 X.21 DTE and DCE Cable Pinouts DB-15 15 Pin Services Online TechnicalThrough the following online systems Days a week, 24 hours a dayAccess by Digital Modem 408Press Return to view the 3ComForum main menu Supplier Support FromYour Network U.S. and Canada, call 800 876-3266 for customer service To find your authorized service provider3Com CorporationContacting 3Com ISD Technical Publications Accessing the 3Com ISD MIBTo exit the FTP session, invoke the quit command Index NumericsQuick Software 1-8Upgrading Firmware 1-8 memory Page Limited Warranty 408 764-5000 3/18/96