3Com 32x, 52x manual RS-232 to RS-232 DCE Cable, 14RS-232 Straight-Through Cable

Page 39

Connectors and Cables 2-17

RS-232 to RS-232 DCE Cable

This straight-through cable connects the RS-232 port on a SuperStack II bridge/router to a standard RS-232 DCE device.

Figure 2-14 shows the pin assignments of the RS-232 cable.

To RS-232 port on bridge/router

 

To modem/TA or CSU/DSU

1

2

3

4

5

6

7

8

9

10

11 12

13

 

1

2

3

4

5

6

7

8

9

10

11 12

13

14 15

16

17

18

19

20

21 22

23

24

25

 

14 15

16

17

18

19

20

21 22

23

24

25

25-pin male connector

 

25-pin male connector

 

 

Name

 

 

 

 

 

Abbr

Pin

Pin

Abbr

 

 

 

 

Name

 

 

 

 

 

 

 

 

Shield

Chassis GND

1

1

Chassis GND

Shield

 

 

 

 

 

 

Transmit Data

 

 

 

 

 

 

TxD

2

2

TxD

 

 

 

 

Transmit Data

 

 

Receive Data

 

 

 

 

 

RxD

3

3

RxD

 

 

 

 

Receive Data

 

 

Request to Send

 

 

 

 

 

RTS

4

4

RTS

 

 

 

 

Request to Send

Clear to Send

 

 

 

 

 

CTS

5

5

CTS

 

 

 

 

Clear to Send

 

 

DCE Ready

 

 

 

 

 

DSR

6

6

DSR

 

 

 

 

DCE Ready

 

 

Signal Ground

 

 

 

 

 

GND

7

7

GND

 

 

 

 

Signal Ground

 

Carrier Detect

 

 

 

 

 

 

CD

8

8

CD

 

 

 

 

Carrier Detect

 

 

Transmit Clock

 

TxC (SCT)

15

15

TxC (SCT)

 

 

Transmit Clock

 

Receive Clock

 

RxC (SCR)

17

17

RxC (SCR)

 

 

Receive Clock

 

DTE Ready

 

 

 

 

 

DTR

20

20

DTR

 

 

 

 

DTE Ready

 

 

Remote Loopback

 

 

 

 

 

 

RL

21

21

RL

 

 

 

 

Remote Loopback

Ring Indicator

 

 

 

 

 

 

RI

22

22

RI

 

 

 

 

Ring Indicator

 

 

Transmit Clock (DTE Source)

 

TT (SCTE)

24

24

TT (SCTE)

 

 

Transmit Clock (DTE Source)

Test Mode

 

 

 

 

 

 

TM

25

25

TM

 

 

 

 

Test Mode

 

 

 

Figure 2-14RS-232 Straight-Through Cable

3Com does not sell this cable.

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Contents Models 32x Electromagnetic Compatibility Information Avis Canadien CE Notice Contents Removing the Cover Installing Memory Reinstalling the Cover Connectors and CablesIndex 3COM Corporation Limited Warranty Viii About this Guide ConventionsIcon Alerts you to Chapter about this Guide 1Equipment Received and Equipment Needed Installing the HardwareRequired EquipmentFor more information on cables, refer to Chapter Mounting 1Rack-Mount Kit Contents4CHAPTER 1 Installing the Hardware Cabling Cabling the Isdn Connector Model Cabling the LAN Connector Models 323, 327,Connector Connection to Mode Cable Name Sold by 3Com? 2Serial Connector Cabling InformationModels 32x DCE-like mode Models 32x DTE modeModels 52x DCE-like mode Models 52x DTE modeRedundant Power Attaching aSystem Modem Connecting a PCCharacteristic Setting Terminal, or12CHAPTER 1 Installing the Hardware Chassis Panels Model Features1SuperStack II NETBuilder Model Features OverviewModel PanelsHardware Interrupt SwitchConnectors LEDs39-pin to 9-pin PC Cable Null Modem-Type PC Cable49-pin to 25-pin Terminal Cable Null Modem-Type Terminal CableModem Cable UTP Connector and CableShielded STP Connector and Cable2UTP Cable Types, MAUs, and Emissions Compliance 3STP Cable Types, MAUs, and Emissions CompliancePinout STP Maximum Current Cabling Standards4Auxiliary Pin Use 5Maximum Workstations on a Token Ring Network6V.35 Straight-Through Cable To V.35 DCE Cable7V.35 to V.35 Direct-Connect Cable To V.35 Direct Connect Cable8UNIVERSAL to V.35 Adapter Cable Universal to V.35 Adapter Cable9UNIVERSAL to V.35 Direct Connect Cable Universal to V.35 Direct Connect Cable10UNIVERSAL to V.36 Adapter Cable Universal to RS-449/V.36 DCE Cable11UNIVERSAL to RS-449/V.36 Direct-Connect Cable Universal to RS-449/V.36 Direct Connect Cable12UNIVERSAL to RS-232 DCE Cable Universal to RS-232 DCE CableUniversal to RS-232 Direct-Connect Cable Universal to RS-232 Direct Connect Cable14RS-232 Straight-Through Cable RS-232 to RS-232 DCE Cable15RS-232 to RS-232 Direct-Connect Cable RS-232 to RS-232 Direct Connect Cable16UNIVERSAL to X.21 Adapter Cable Universal to X.21 Adapter Cable6ISDN Cable Pinouts Pin No Function SignalPhysical Specifications AltitudeRelative Humidity 22CHAPTER 2 Overview Removing the Cover Upgrading MemoryDip switches should all be in the down position Reinstalling Cover 4CHAPTER 3 Upgrading Memory System /Fault TroubleshootingDuring the Load TroubleshootingPhase During the TestCall your network supplier for assistance Associated Model No ConnectorLED Meanings 3LED MeaningsSymptom Cause and Action Token RingConnection This is Only station 0001 0101 Canonical least significant bit firstProvisioning Your Isdn Line American Isdn BRI ServicesAT&T 5ESS NI1 Isdn Information Sheet 3Com SuperStack II Bridge/RouterAT&T 5ESS North American Switch Provisioning TablesRequired Information Table A-1Ordering Isdn Service for an AT&T 5ESS SwitchDN must be set as follows Parameter Setting Required Information SpecificationTable A-3Ordering Isdn Service for a DMS 100 Switch SPIDs Table A-4Ordering Isdn Service for a Siemens Ewsd Switch8APPENDIX a Provisioning Your Isdn Line Ordering German Isdn BRI Services10APPENDIX a Provisioning Your Isdn Line 3Com Bulletin Board ServiceTechnical Support Online TechnicalCountry Data Rate Telephone Number Access by Analog ModemAccess by Digital Modem 408 654Country Number Telephone3Com Benelux B.V Country Telephone Number Fax Number Page Numerics IndexSTP UTP Index 3Com Corporation Limited Warranty Limitation of Liability
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