Specifications

Table Of Contents
52 Chapter 9 Pinout reference
Loopback connector pinouts
DB-15M, DB-25F, DB-25F, DB-15F, DB-25F, RJ-45
Loopback connectors must have the following sets of pins tied together:
DB-15
EIA-232
Male
DB-25
EIA-232
Female
DB-25
V.35
Female
DB-15
X.21
Female
DB-25
EIA-530/422
Female
RJ-45
Telco
2,3 2,3 2, 3 2, 4 2, 3 1, 8
4,5 4,5 4, 5 3, 5 4, 5 2, 7
6, 8, 15 6, 8, 20 6, 8, 20 6, 7 6, 8, 20
12,13 17, 24 9, 11 9, 11 9, 11
14, 16 10, 12 14, 16
17, 24 13, 14 17, 24
13, 19
10, 22, 23