EIA-232-E Pin Assignments
JM8 to RJ11 Crossover Cable
EIA-232-E Pin Assignments
Table D-1
lists the EIA-232-E pin assignments for the
modem.
RS-232
Name
Pin
Circuit
1
—
2
TXD
3
RXD
4
RTS
5
CTS
6
DSR
7
SG
8
LSD
15
TXC
17
RXC
20
DTR
22
R1
24
XTXC
3825-A2-GB30-40
Pin Assignments
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EIA-232-E Pin Assignments
EIA
Signal
CCITT
Source
AA
101
—
BA
103
DTE
BB
104
DCE
CA
105
DTE
CB
106
DCE
CC
107
DCE
AB
102
—
CF
109
DCE
DB
114
DCE
DD
115
DCE
CD
108
DTE
CE
125
DCE
DA
113
DTE
Table D-1
Circuit Function
Shield
Transmit Data
Receive Data
Request-to-Send
Clear-to-Send
Data Set Ready
Signal Ground
Line Signal detect
Transmit Clock
Receive Clock
Data Terminal Ready
Ring Indicator
External Clock
January 1999
D
D-1
D-2
D-1