
EiconCard S90 Installation Guide 19
VHSI—X.21 Connections
The wiring diagram below shows the connections required to
construct a VHSI—X.21 cable. For the additional information
required to construct your own cables, see “Cable Construction
Information” on page 9.
Figure 11. VHSI—X.21 Connections
VHSI
X.21
1
19
4
22
5
23
6
24
8
26
11
29
12
12
3
30
10
8
1
9
7
14
4
11
6
13
5
TWISTED PAIRS
(MANDATORY)
2
DRAIN WIRE
BRAID
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