
20 EiconCard S90 Installation Guide
Back-to-Back Connections
The wiring diagram below shows the connections required to
construct a back-to-back VHSI—VHSI cable. Back-to-back
operations are conducted through the V.36 interface. For the
additional information required to construct your own cables, see
“Cable Construction Information” on page 9.
Figure 12. VHSI—VHSI Connections
VHSI
VHSI
DRAIN WIRE
4
22
6
24
26
23
5
8
13
27 31
25
11 12
29 30
12 11
30 29
7
13
31
BRAID
9
27
25
5
6
24
4
22
17
35
TWISTED PAIRS
(MANDATORY)
19
7
9
17
35
8
26
23
1
1
2
19
2
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