APPENDIX B
V.35 INTERFACE STANDARDS
APPENDIX C
RS-232 INTERFACE STANDARDS
9
10
1- (FG) Frame Ground
2- (TD) Transmit Data
3- (RD) Receive Data
4- (RTS) Request to Send
5- (CTS) Clear to Send
6- (DSR) Data Set Ready
7- (SG) Signal Ground
8- (DCD) Data Carrier Detect
Transmit Clock - 15
Receive Clock - 17
Data Term. Ready (DTR) - 20
External Clock - 24
RS-232C/V.24 INTERFACE (DB-25)
B
F
L
R
V
Z
DD
JJ
NN
A
E
K
P
U
Y
CC
HH
MM
D
J
N
T
X
BB
FF
LL
C
H
M
S
W
AA
EE
KK
A- Frame Ground
C- Request to Send
E- Data Set Ready
H- Data Terminal Ready
K-
M-
P- Transmitted Data (A)
S- Transmitted Data (B)
U- Terminal Timing (A)
W- Terminal Timing (B)
Y- Transmit Timing (A)
AA- Transmit Timing (B)
Signal Ground -B
Clear To Send -D
Data Carrier Detect -F
Receive Data (A) -R
Receive Data (B) -T
Receive Timing (A) -V
Receive Timing (B) - X
CCITT V.35 Interface (M/34 Male)
1 - (FG) Frame Ground
2 - Transmit Data A
3 - Receive Data A
4 - (RTS) Request to Send
5 - (CTS) Clear to Send
6 - (DSR) Data Set Ready
7 - (SG) Signal Ground
8 - (CD) Carrier Detect
9 - Receive Clock B
11 - External Clock B
12 - Transmit Clock B
Data Term. Ready (DTR) - 20
CCITT V.35/EIA-530 INTERFACE (DB-25)
External Clock A - 24
Transmit Clock A - 15
Receive Clock A - 17
Transmit Data B - 14
Receive Data B - 16