Serial Connectors and Flex-WAN Cables 49
RS-232 DCE Cable
Pinouts
This cable connects the bridge/router to an RS-232 DTE.
Figure 21 Flex-WAN and RS-232 DCE Connectors
.
Table 13 RS-232 DCE Cable Pinouts
Flex-WAN Connector
RS-232 DCE
Connector
Signal Pin Direction Pin Signal Twisted Pair
*
*Unused twisted wires of a twisted pair should be connected to Shield Ground. In this cable
this is one wire of each of the twisted pairs 1 to 12.
DCD/LL 33 ← 18 LTST 1
DSR/DTR 34 ← 20 DTR 2
CTS/RTS 35 ← 4 RTS 3
RxD/TxD 36 ← 2 TxD 4
RxC/TxCE 38 ← 24 TxCE 5
TxCE/TxC 39 → 15 TxC 6
Nil/RxC 40 → 17 RxC 7
TxD/RxD 41 → 3 RxD 8
RTS/CTS 42 → 5 CTS 9
DTR/DSR 43 → 6 DSR 10
LL/DCD 44 → 8 DCD 11
Circuit Ground 45 - 7 Circuit Ground 12
Shield Ground 46 Cable Shield 1 Shield Ground -
Shorting Group 1 50
51
- - - -
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
0-pin Flex-WAN male connector
25-pin female connector
To SuperStack II NETBuilder
To DTE
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
HWBook Page 49 Friday, June 19, 1998 3:42 PM
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