Cable Pin Assignments

V.35 Connection Cable Pin Assignments

The connector that plugs into the rear panel of V.35-compatible units has the following pin assignments.

CCITT

 

 

Direction

 

 

Code

Pin

Name

DCE DTE

Function

Description

 

 

 

 

 

 

101

A

PG

 

Protective Ground

Machine ground

 

 

 

 

 

 

102

B

SG

 

Signal Ground

Ground reference for all circuits

 

 

 

 

 

 

105

C

RTS

Request to Send

DTE has message to send

 

 

 

 

 

 

106

D

CTS

Clear to Send

DCE is ready to accept and transmit DTE data

 

 

 

 

 

 

107

E

DSR

Data Set Ready

DCE is ready to operate

 

 

 

 

 

 

109

F

RLSD

Data Channel

DCE is receiving a carrier signal

 

 

 

 

Received Line Signal

 

 

 

 

 

Detector

 

 

 

 

 

 

 

108

H

DTR

Data Receiver Ready

DTE is ready to operate

 

 

 

 

 

 

141

L

LL

Local Loopback

Local loopback

 

 

 

 

 

 

140

N

RDL

Loopback/Maintenan

Remote loopback

 

 

 

 

ce

 

 

 

 

 

 

 

103

P

TXD

Transmit Data (A)

Data generated by DTE

 

 

 

 

 

 

104

R/D

RXD

Received Data (A)

Data received by DTE

 

 

 

 

 

 

103

S

TXD

Transmitted Data (B)

Data generated by DTE

 

 

 

 

 

 

104

R

RXD

Received Data (B)

Data received by DTE

 

 

 

 

 

 

113

U

EXT

Transmitter Signal

To help detect center of signaling element on BA

 

 

CLK

 

Element Time (A)

 

 

 

 

 

 

 

115

V

RSET

Receiver Signal

To help detect center of signaling element on BB

 

 

 

 

Element Timing (A)

 

 

 

 

 

 

 

113

W

EXT

Transmitter Signal

To help detect center of signaling element on BA

 

 

CLK

 

Element Timing (B)

 

 

 

 

 

 

 

115

X

RSET

Receiver Signal

To help detect center of signaling element on BB

 

 

 

 

Element Timing (B)

 

 

 

 

 

 

 

114

Y TSET

Transmit Signal Element Timing (A)

To help detect center of signaling element on BA

114

a

TSET

Transmit Signal Element Timing (B)

To help detect center of signaling element on BB

142

n

TST

Test Indicator

Reserved for test

B-4

October 1997

7924-A2-GB20-30

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Paradyne 7924 manual Connection Cable Pin Assignments, Direction Code Pin Name, Function Description