3Com 52x, 32x manual RS-232 to RS-232 Direct Connect Cable, 15RS-232 to RS-232 Direct-Connect Cable

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2-18CHAPTER 2: OVERVIEW

RS-232 to RS-232 Direct Connect Cable

This cable connects the RS-232 port on the bridge/router to an RS-232 port on an SNA legacy device.


To RS-232 port on bridge/router																To SNA device
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
Shield	Chas. GND
Clear to Send	CTS
Transmit Data	TxD
Receive Data	RxD
Request to Send	RTS
DCE Ready	DSR
Signal Ground	GND
DTE Ready	DTR
Receive Clock - DCE Source	RxC(SCR)
Transmit Clock - DTE Source	TT(SCTE)
Secondary Receive Data	SRD

Pin

1

5

2

3

4

6

7

20

17

24

16

Pin
1
5
3
2
8
20
7
6
24
15
17

Abbr	Name
Chas. GND	Shield
CTS	Clear to Send
RxD	Receive Data
TxD	Transmit Data
CD	Carrier Detect
DTR	DTE Ready
GND	Signal Ground
DSR	DCE Ready
TT(SCTE)	Transmit Clock - DTE Source
TxC(SCT)	Transmit Clock - DCE Source
RxC(SCR)	Receive Clock - DCE Source

Figure 2-15RS-232 to RS-232 Direct-Connect Cable

You can order this cable from 3Com (part number 3C8132).

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Contents Models 32x Electromagnetic Compatibility Information Avis Canadien CE Notice Contents Connectors and Cables Removing the Cover Installing Memory Reinstalling the CoverIndex 3COM Corporation Limited Warranty Viii Conventions About this GuideIcon Alerts you to Chapter about this Guide Installing the Hardware RequiredEquipment 1Equipment Received and Equipment NeededFor more information on cables, refer to Chapter 1Rack-Mount Kit Contents Mounting4CHAPTER 1 Installing the Hardware Cabling Cabling the LAN Connector Models 323, 327, Cabling the Isdn Connector Model2Serial Connector Cabling Information Connector Connection to Mode Cable Name Sold by 3Com?Models 32x DTE mode Models 32x DCE-like modeModels 52x DTE mode Models 52x DCE-like modeAttaching a Redundant PowerSystem Connecting a PC Characteristic SettingTerminal, or Modem12CHAPTER 1 Installing the Hardware Model Features 1SuperStack II NETBuilder Model FeaturesOverview Chassis PanelsPanels ModelInterrupt Switch ConnectorsLEDs HardwarePC Cable 39-pin to 9-pin PC Cable Null Modem-TypeTerminal Cable 49-pin to 25-pin Terminal Cable Null Modem-TypeUTP Connector and Cable Modem CableSTP Connector and Cable 2UTP Cable Types, MAUs, and Emissions Compliance3STP Cable Types, MAUs, and Emissions Compliance ShieldedCabling Standards 4Auxiliary Pin Use5Maximum Workstations on a Token Ring Network Pinout STP Maximum CurrentTo V.35 DCE Cable 6V.35 Straight-Through CableTo V.35 Direct Connect Cable 7V.35 to V.35 Direct-Connect CableUniversal to V.35 Adapter Cable 8UNIVERSAL to V.35 Adapter CableUniversal to V.35 Direct Connect Cable 9UNIVERSAL to V.35 Direct Connect CableUniversal to RS-449/V.36 DCE Cable 10UNIVERSAL to V.36 Adapter CableUniversal to RS-449/V.36 Direct Connect Cable 11UNIVERSAL to RS-449/V.36 Direct-Connect CableUniversal to RS-232 DCE Cable 12UNIVERSAL to RS-232 DCE CableUniversal to RS-232 Direct Connect Cable Universal to RS-232 Direct-Connect CableRS-232 to RS-232 DCE Cable 14RS-232 Straight-Through CableRS-232 to RS-232 Direct Connect Cable 15RS-232 to RS-232 Direct-Connect CableUniversal to X.21 Adapter Cable 16UNIVERSAL to X.21 Adapter CablePin No Function Signal 6ISDN Cable PinoutsAltitude Physical SpecificationsRelative Humidity 22CHAPTER 2 Overview Upgrading Memory Removing the CoverDip switches should all be in the down position Reinstalling Cover 4CHAPTER 3 Upgrading Memory Troubleshooting System /FaultTroubleshooting PhaseDuring the Test During the LoadAssociated Model No Connector LED Meanings3LED Meanings Call your network supplier for assistanceToken Ring Symptom Cause and ActionConnection This is Only station Canonical least significant bit first 0001 0101American Isdn BRI Services Provisioning Your Isdn LineIsdn Information Sheet 3Com SuperStack II Bridge/Router AT&T 5ESS NI1North American Switch Provisioning Tables AT&T 5ESSTable A-1Ordering Isdn Service for an AT&T 5ESS Switch Required InformationRequired Information Specification DN must be set as follows Parameter SettingTable A-3Ordering Isdn Service for a DMS 100 Switch Table A-4Ordering Isdn Service for a Siemens Ewsd Switch SPIDs8APPENDIX a Provisioning Your Isdn Line Isdn BRI Services Ordering German10APPENDIX a Provisioning Your Isdn Line Service Technical SupportOnline Technical 3Com Bulletin BoardAccess by Analog Modem Access by Digital Modem408 654 Country Data Rate Telephone NumberTelephone Country Number3Com Benelux B.V Country Telephone Number Fax Number Page Index NumericsSTP UTP Index 3Com Corporation Limited Warranty Limitation of Liability