|
Pin |
Signal |
EIA
CKT |
From
DCE |
To
DCE |
1 |
Frame Ground |
AA |
|
|
2 |
Transmitted Data |
BA |
|
D (Data) |
3 |
Received Data |
BB |
D |
|
4 |
Request to Send |
CA |
|
C (Control) |
5 |
Clear to Send |
CB |
C |
|
6 |
Data Set Ready |
CC |
C |
|
7 |
Signal Gnd/Common Return |
AB |
|
|
8 |
Rcvd. Line Signal Detector |
CF |
C |
|
11 |
Undefined |
|
|
|
12 |
Secondary Rcvd. Line Sig. Detector |
SCF |
C |
|
13 |
Secondary Clear to Send |
SCB |
C |
|
14 |
Secondary Transmitted Data |
SBA |
|
D |
15 |
Transmitter Sig. Element Timing |
DB |
T (Timing) |
|
16 |
Secondary Received Data |
SBB |
D |
|
17 |
Receiver Sig. Element Timing |
DD |
T |
|
18 |
Undefined |
|
|
|
19 |
Secondary Request to Send |
SCA |
|
C |
20 |
Data Terminal Ready |
CD |
|
C |
21 |
Sig. Quality Detector |
CG |
|
C |
22 |
Ring Indicator |
CE |
C |
|
23 |
Data Sig. Rate Selector (DCE) |
CI |
|
C |
24 |
Transmitter Sig. Element Timing |
DA |
|
T |
25 |
Undefined |
|
|
|