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2-18 CHAPTER 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.
Figure 2-15 RS-232 to RS-232 Direct-Connect Cable
You can order this cable from 3Com (part number 3C8132).
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
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
25-pin male connector
25-pin male connector
1
5
2
3
4
6
7
20
17
24
16
1
5
3
2
8
20
7
6
24
15
17
Shield
Clear to Send
Receive Data
Transmit Data
Carrier Detect
DTE Ready
Signal Ground
DCE Ready
Transmit Clock - DTE Source
Transmit Clock - DCE Source
Receive Clock - DCE Source
Shield
Clear to Send
Transmit Data
Receive Data
Request to Send
DCE Ready
Signal Ground
DTE Ready
Receive Clock - DCE Source
Transmit Clock - DTE Source
Secondary Receive Data
Chas. GND
CTS
TxD
RxD
RTS
DSR
GND
DTR
RxC(SCR)
TT(SCTE)
SRD
Chas. GND
CTS
RxD
TxD
CD
DTR
GND
DSR
TT(SCTE)
TxC(SCT)
RxC(SCR)
To RS-232 port on bridge/router
To SNA device
Name Abbr NameAbbrPin Pin
SS2TRHWBook Page 18 Monday, May 5, 1997 3:11 PM