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Appendix B Adapter cable pinout diagrams 55
Setting Up the BayStack Instant Internet 400 Unit
X.21 (DCE) adapter cable
Figure 8 shows the pinout settings for an X.21 modem adapter cable (part number
CQ2118004).
Figure 8 X.21 (DCE) adapter cable diagram.
1
2
4
3
5
8
15
17
24
7
14
19
16
10
13
9
12
11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
TDA
RTA
RDA
CTSA
RCA
ETCA
SGND
TDB
RTB
RDB
CTSB
RCB
ETCB
DTE
DB25M DV15M (X.21 VF)
9109EB