3Com 32x, 52x - page 17

Cabling the Connectors 1-7

Cabling the Serial

Connectors The serial connectors provide the following options:

■The UNIVERSAL connector can be converted to a V.35, V.36, X.21,

RS-449, or RS-232 connector.

■All serial connectors can function in either DTE or DCE-like mode,

which allows you to connect a serial connector to either a CSU/DSU

device or modem (DTE mode), or to an IBM cluster controller

(DCE-like mode). A connection to an IBM cluster controller must be

made using a permanent leased line only. You can operate the serial

connectors in any combination of DTE and DCE-like modes.

The cables you use determine the serial connector function. Table 1-2

lists the types of devices available for serial connections, cable options

for connection to each device, and if the cable is sold by 3Com. Cables

used for IBM cluster controller connectivity (DCE-like mode) are referred

to as direct connect cables.

*If you cable the UNIVERSAL connector, you need to perform some software configuration. For more information, refer to the

software guide.

Table 1-2 Serial Connector Cabling Information

Connection to Connector*Connector

Mode Cable Name Sold by 3Com?

V.35 CSU/DSU device or

modem V.35 DTE V.35 to V.35 DCE cable No. Easily obtained from

cable manufacturer.

V.35 CSU/DSU device or

modem UNIVERSAL DTE V.35 adapter cable Yes (3C8035).

V.35 IBM cluster controller V.35 DCE-like V.35 to V.35 direct connect

cable No. See Chapter 2 for

pin assignments.

V.35 IBM cluster controller UNIVERSAL DCE-like UNIVERSAL to V.35 direct

connect cable Yes (3C8135).

X.21 CSU/DSU device or

modem UNIVERSAL DTE X.21 adapter cable Yes (3C8021).

RS-449 or V.36 CSU/DSU

device or modem UNIVERSAL DTE UNIVERSAL to RS-449/V.36

DCE cable No. See Chapter 2 for

pin assignments.

RS-449 or V.36 IBM cluster

controller UNIVERSAL DCE-like UNIVERSAL to RS-449/V.36

direct connect cable No. See Chapter 2 for

pin assignments.

RS-232 CSU/DSU device or

modem UNIVERSAL DTE UNIVERSAL to RS-232 DCE

cable Yes (3C8023).

RS-232 CSU/DSU device or

modem RS-232 DTE RS-232 to RS-232 DCE cable No. Easily obtained from

cable manufacturer.

RS-232 IBM cluster controller UNIVERSAL DCE-like UNIVERSAL to RS-232 direct

connect cable Yes (3C8123).

RS-232 IBM cluster controller RS-232 DCE-like RS-232 to RS-232 direct

connect cable Yes (3C8132).

SS2TRHWBook Page 7 Monday, May 5, 1997 3:11 PM

Contents

Main 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Electromagnetic Compatibility Information Page CE Notice C ONTENTS PGRADING ROUBLESHOOTING T M EMORY A B Page A BOUT Conventions T UIDE Page I NSTALLING Equipment Received and Equipment Needed Table 1-1 WARNING: Equipment Received and Equipment Needed (continued) Table 1-1 For more information on cables, refer to Chapter 2. Mounting Page Cabling the Connectors Page Page The following gures show how to cable the serial connectors. Models 32x (DTE mode) Models 32x (DCE-like mode) Models 52x (DTE mode) Models 52x (DCE-like mode) Attaching a Redundant Power System Connecting a PC, Terminal, or Modem Shutting Down 2 Model Features Chassis Panels Figure 2-1 Chassis Front Panels LEDs Hardware Interrupt Switch Connectors and Cables 2-4 CHAPTER 2: OVERVIEW Figure 2-3 9-pin to 9-pin PC Cable (Null Modem-Type) Connectors and Cables 2-5 Figure 2-4 9-pin to 25-pin Terminal Cable (Null Modem-Type) 2-6 CHAPTER 2: OVERVIEW Figure 2-5 9-pin to 25-pin Modem Cable (Straight-Through-Type) LAN Connectors and Cables The bridge/router has two token ring connectors. Only one connector Table 2-2 UTP Cable Types, MAUs, and Emissions Compliance Table 2-3 STP Cable Types, MAUs, and Emissions Compliance Page Connectors and Cables 2-9 V.35 male connector V.35 male connector Figure 2-6 V.35 Straight-Through Cable To V.35 port on bridge/router To DCE 2-10 CHAPTER 2: OVERVIEW Figure 2-7 V.35 to V.35 Direct-Connect Cable V.35 male connector V.35 male connector To V.35 port on bridge/router To V.35 SNA Device Connectors and Cables 2-11 37-pin female connector V.35 female connector You can order this cable from 3Com (part number 3C8035). To CSU/DSU 2-12 CHAPTER 2: OVERVIEW Figure 2-9 UNIVERSAL to V.35 Direct Connect Cable You can order this cable from 3Com (part number 3C8135). 37-pin female connector V.35 male connector To SNA device Connectors and Cables 2-13 Figure 2-10 UNIVERSAL to V.36 Adapter Cable To DCE 2-14 CHAPTER 2: OVERVIEW Figure 2-11 UNIVERSAL to RS-449/V.36 Direct-Connect Cable Connectors and Cables 2-15 Figure 2-12 UNIVERSAL to RS-232 DCE Cable You can order this cable from 3Com (part number 3C8023). To DCE 25-pin male connector 37-pin female connector 2-16 CHAPTER 2: OVERVIEW Figure 2-13 UNIVERSAL to RS-232 Direct-Connect Cable You can order this cable from 3Com (part number 3C8123). 25-pin male connector To SNA device Connectors and Cables 2-17 To RS-232 port on bridge/router To modem/TA or CSU/DSU Figure 2-14 RS-232 Straight-Through Cable 25-pin male connector 25-pin male connector 2-18 CHAPTER 2: OVERVIEW Figure 2-15 RS-232 to RS-232 Direct-Connect Cable You can order this cable from 3Com (part number 3C8132). 25-pin male connector 25-pin male connector To RS-232 port on bridge/router To SNA device Name Abbr NameAbbrPin Pin Connectors and Cables 2-19 37-pin female connector 15-pin male connector Figure 2-16 UNIVERSAL to X.21 Adapter Cable To Universal port on bridge/router To modem/TA or CSU/DSU Page Physical Specifications 52x bridge/routers. Table 2-7 Environmental Requirements for Model 32x and 52x Bridge/Routers Page 3 Removing the Cover Installing Memory Reinstalling the Cover Page 4 Troubleshooting During the Test Phase Troubleshooting During the Load Phase Table 4-1 System Self-test Errors Table 4-2 System Software Load Errors LED Meanings bridge/router. Table 4-2 System Software Load Errors (continued) Table 4-3 LED Meanings Troubleshooting the Token Ring Connection Table 4-4 Troubleshooting the Token Ring Connection (Models 327 and 527 only) Table 4-4 Troubleshooting the Token Ring Connection (Models 327 and 527 only) (continued) Page A Ordering North American ISDN BRI Services Page North American Switch Provisioning Tables Table A-1 Ordering ISDN Service for an AT&T 5ESS Switch Page DMS 100 and National ISDN To order ISDN service for a DMS 100 or National ISDN switch, provide the telephone company with the information in Table A-3. Table A-3 Ordering ISDN Service for a DMS 100 Switch SPIDs NT1s and Power Supplies Ordering German ISDN BRI Services Page B Online Technical Services Page Support from Your Network Supplier B-4 APPENDIX B: TECHNICAL SUPPORT Support from 3Com Returning Products for Repair Page I Numerics A B C I L M N O U V W X Page 3Com Corporation LIMITED W H S STANDARD WARRANTY S W ARRANTIES E L IMITATION OF L IABILITY G OVERNING L AW