User ManualTable of ContentsAbout This Guide9Conventions9Installing the Hardware11Required Equipment11Mounting13Rack-Mount Kit13Installing on a Tabletop13Stacking with Brackets14Installing in a Rack14Cabling the Connectors15Cabling the LAN Connector (Models 323, 327, and 52...16Cabling the ISDN Connector (Model52x)16Cabling the Serial Connectors17Models 32x (DTE mode)18Models 32x (DCE-like mode)18Models 52x (DTE mode)19Models 52x (DCE-like mode)19Attaching a Redundant Power System20Connecting a PC, Terminal, or Modem21Shutting Down22Overview23Model Features23Chassis Panels23LEDs25Hardware Interrupt Switch25Connectors and Cables25Console Cables25PC Cable26Terminal Cable27Modem Cable28LAN Connectors and Cables28UTP Connector and Cable28STP Connector and Cable29Cabling Standards30Serial Cables31V.35 to V.35 DCE Cable (32x)31V.35 to V.35 Direct Connect Cable (32x)32UNIVERSAL to V.35 Adapter Cable33UNIVERSAL to V.35 Direct Connect Cable34UNIVERSAL to RS-449/V.36 DCE Cable35UNIVERSAL to RS-449/V.36 Direct Connect Cable36UNIVERSAL to RS-232 DCE Cable37UNIVERSAL to RS-232 Direct Connect Cable38RS-232 to RS-232 DCE Cable39RS-232 to RS-232 Direct Connect Cable40UNIVERSAL to X.21 Adapter Cable41ISDN Cable (Model52x )42Physical Specifications43Upgrading Memory45Removing the Cover45Installing Memory46Reinstalling the Cover47Troubleshooting49Troubleshooting During the Test Phase50Troubleshooting During the Load Phase50LED Meanings51Troubleshooting the Token Ring Connection52Provisioning Your ISDN Line55Ordering North American ISDN BRI Services55North American Switch Provisioning Tables57AT&T 5ESS Switch58AT&T 5ESS Custom Switch59DMS 100 and National ISDN60Siemens EWSD Switch61SPIDs61NT1s and Power Supplies62Ordering German ISDN BRI Services63Technical Support65Online Technical Services65World Wide Web Site653Com Bulletin Board Service65Access by Analog Modem66Access by Digital Modem663ComFacts Automated Fax Service663ComForum on CompuServe Online Service67Support from Your Network Supplier67Support from 3Com68Returning Products for Repair69Index713Com Corporation Limited Warranty75Size: 1.25 MBPages: 76Language: EnglishOpen manual