3Com SuperStack II User Manual

Serial Connectors and Flex-WAN Cables 55
RS-449 DCE Cable
Pinouts
This cable connects the bridge/router to an RS-449 DTE.
Figure 27 Flex-WAN and RS-449 DCE Connectors
LL/DCD 44 → 10 LLSC 12
Circuit Ground 45 − 37 Circuit
Ground
Shield Ground 46 Cable Shield 1 Shield
Ground
-
Shorting Group 1 48
49
- - - -
Shorting Group 2 51
52
-
Table 18 RS-449 DTE Cable Pinouts (continued)
Flex-WAN Connector RS-449 DTE Connector
Signal Pin Direction Pin Signal Twisted Pair
Table 19 RS-449 DCE Cable Pinouts
Flex-WAN Connector RS-449 DCE Connector
Signal Pin Direction Pin Signal Twisted Pair
CTS/RTS+ 1 ← 7 RS+ 1
CTS/RTS- 2 ← 25 RS-
DSR/DTR+ 3 ← 12 TR+ 2
DSR/DTR- 4 ← 30 TR-
DCD/DCD+ 5 ← 13 RR+ 3
DCD/DCD- 5 ← 31 RR-
DTR/DSR+ 7 → 11 DM+ 4
DTR/DSR- 8 → 29 DM-
RTS/CTS+ 9 → 9 CS+ 5
RTS/CTS- 10 → 27 CS-
TxD/RxD+ 11 → 6 RD+ 6
TxD/RxD- 12 → 24 RD-
60-pin Flex-WAN male connector
To SuperStack II NETBuilder
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46
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 26 27 28 29 30 31 32 33 34 35 36 37
To DTE
37-pin female connector
HWBook Page 55 Friday, June 19, 1998 3:42 PM

3Com SuperStack II Specifications

General

Brand	3Com
Model	SuperStack II
Category	Switch
Language	English