Specifications

Null-Modem Cables 19
Null-Modem Cables
The wiring diagrams below shows the connections required to
construct a back-to-back HSI—HSI cable, and V.35 - AS/400 cable.
For additional information required to construct your own cables,
see “Cable Construction Information” on page 15.
Figure 8. HSI V.24/V.35 Null-Modem Cable (300-031)
11
23
14
9
8
6
5
4
3
2
HSI
HSI
26
19
13
16
5
4
7
20
8
3
TWISTED PAIRS
(MANDATORY)
DRAIN WIRE
BRAID
1
1
16
24
14
9
23
10
15
2
17
15
6
12
11
7
10
12
19
17
24
20
26
13