Cisco RJ-45-to-AUX User Manual download pdf (Page 15)

Cable Specifications C-15

Serial Cable Assemblies and Pinouts

X.21

Figure C-5 shows the X.21 cable assembly; Table C-10 lists the DTE pinout; Table C-11

lists the DCE pinout. Arrows indicate signal direction: —> indicates DTE to DCE, and <—

indicates DCE to DTE.

Figure C-5 X.21 Cable Assembly

Table C-10 X.21 DTE Cable Pinout (DB-60 to DB-15)

1. Any pin not referenced is not connected.

J1-20

J1-19

TxCE/TxC+

TxCE/TxC–

Twisted pair no. 2 —>

—>

J2-Y

J2-AA

SCT+

SCT–

60 Pin

Signal Description Direction 15 Pin Signal

J1-48

J1-47

GND

MODE_2

Shorting group – – –

J1-51

J1-52

GND

MODE_DCE

Shorting group – – –

60 Pin

Signal Description Direction 34 Pin Signal

H1974

60-pin connector (J1)

15-pin connector (J2)

Connectors are not to scale

J2-8

J2-15

J2-9

J2-1

J1-46

J1-45

J1-16

J1-15

J1-1

J1-30

J1-31

J1-60

1 ... 14 15 16 ... 24

Cable Speciﬁcations 1
EIA/TIA-232 5
EIA/TIA-449 8
Token Ring Pinout 18
Asynchronous Serial Ports 19
RJ-45 Adapter Pinouts 23

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Cisco RJ-45-to-AUX User Manual Page 15

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