Intellisystem IT-7304-PC, User Manual, Page: 8 / 12

7
Definition of Signal Lines at V.35 Interface
V.35 Feet Signal Function Direction
A CGND Frame ground
——
B GND signal ground
——
C RTS request to send input
D CTS consent to send output
E DSR data set ready output
F DCD data carrier detection output
H DTR data terminal ready input
P TXD A
transmitting data
line A
input
S TXD B
transmitting data
line B
input
R RXD A receiving data line A output
T RXD B receiving data line B output
U
EXTCLK
A
exterior clock line A input
W
EXTCLK
B
exterior clock line B input
V RXCL A
receiving clock line
A
output
X RXCL B
receiving clock line
B
output
Y TXCL A
transmitting clock
line A
output
AA TXCL B
transmitting clock
line B
output