Cisco 3000 Series - Page 78

Serial Cable Pinouts
Table A-la X.21 DCE Serial Cable
Pinouts and
Signal Descriptions
72-0137-01 Connections1
From
Signal Type
To
Signal
J1-5
MUXSEL Jl-38 GND
J1-36 449 GND J2-8 X.21 GND
J1-41 449 DSR
Jumper
J1-8 449 DTR
J1-25 J1-24
J1-35 449 TXD Twisted Pair J2-2 X.21 TXD
J1-19 J2-9
J1-6 449-RTS Twisted Pair J2-3 X.21 CTh
J1-22 J2-1O
Jl-1 449 RXD Twisted Pair J2-4 X.21 RXD
Jl-34 J2-11
JI-lO 449 RLSD Twisted Pair J2-5 X.21 IND
Jl-26 J2-12
J1-43 449 SCT Twisted Pair J2-6 X.21 CLK
Jl-27 J2-13
J1-17 DCE SEL J1-44
J1-15 Chassis GND J2-l
Any pin
not
referenced
on connector
is
not connected
EIA-530 Cable
Assembly
Figure
A-6
shows
the
EIA-530 serial cable
assembly
and Table A-il lists the
pinouts
and
signal
descriptions
J1-50
J1-33
Ji -17
Ji -1
J1-18
J1-34
Figure
A-6 EIA-530 Cable
Assembly
50-pin
connector
25-pin
connector
Cabling
Specifications
A-il