Serial Connectors and Flex-WAN Cables 53
X.21 DCE Cable
Pinouts
This cable connects the bridge/router to an X.21 DTE.
Figure 25 Flex-WAN and X.21 DCE Connectors
.
Table 17 X.21 DCE Cable Pinouts
Flex-WAN Connector X.21 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 twisted pair 4.
CTS/RTS+ 1 ← 1 Control+ 1
CTS/RTS- 2 ← 2 Control-
RTS/CTS+ 9 → 5 Indicate+ 2
RTS/CTS- 10 → 12 Indicate-
TxD/RxD+ 11 → 4 Receive+ 3
TxD/RxD- 12 → 11 Receive-
Circuit Ground 15 - 8 Control GND 4
TxC/RxC- 23 ← 13 Timing- 5
TxC/RxC+ 24 ← 6 Timing+
RxD/TxD- 27 ← 9 Transmit- 6
RxD/TxD+ 28 ← 2 Transmit+
Shield Ground 46 Cable Shield 1 Shield Ground -
Shorting Group 1 47
48
- - - -
60-pin Flex-WAN male connector
To SuperStack II NETBuilder
To DTE
15-pin female connector
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15
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 53 Friday, June 19, 1998 3:42 PM
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