3Com 3C8S5007 - SuperStack II PathBuilder S500..., User Manual

Page: 100 / 190

100 A
PPENDIX
C: C
ONNECTORS AND
C
ABLES
RS-449 DCE Cable
Pinouts
This cable connects the switch to an RS-449 DTE.
Figure 38 Flex-WAN and RS-449 DCE Connectors
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 24 RS-449 DTE Cable Pinouts (continued)
Flex-WAN Connector RS-449 DTE Connector
Signal Pin Direction Pin Signal Twisted Pair
Table 25 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- 6
←
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-
TxCE/TxC+ 13
→
5 ST+ 7
60-pin Flex-WAN male connector
To PathBuilder switch
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