ADCP-50-304 • Issue 19 • June 1999 • Section 3: PatchSwitch V.35

BACKPLANE

V.35

PATCH

 

STATUS, DELAY, AND

MODULE

 

ALARM CIRCUITS

A

FEMALE A

FEMALE C

C

FRONT LOADING BOARD

1624-A

Figure 3-2. V.35 Interface Module and Conversion Board

Table 3-2. Normal Pin Assignments

 

 

 

SIGNAL

DB-25

V.35 PIN

NAME

ORIGIN

DESCRIPTION

CONNECTOR PIN

A

FG

 

Frame Ground

1

 

 

 

 

 

B

SG

 

Signal Ground

7

 

 

 

 

 

C

RTS

DTE

Request to Send

4

 

 

 

 

 

D

CTS

DCE

Clear to Send

5

 

 

 

 

 

E

DSR

DCE

Data Set Ready

6

 

 

 

 

 

F

DCD

DCE

Data CXR Detect

8

 

 

 

 

 

H

DTR

DTE

Data Term Ready

20

 

 

 

 

 

J

RI

DCE

Ring Indicator

22

 

 

 

 

 

P

TD (+)

DTE

Trans Data (+)

2

 

 

 

 

 

S

TD (–)

DTE

Trans Data (–)

14

 

 

 

 

 

R

RD (+)

DCE

Rec Data (+)

3

 

 

 

 

 

T

RD (–)

DCE

Rec Data (–)

19

 

 

 

 

 

U

TCE (+)

EXT

Trans Clck Ext (+)

24

 

 

 

 

 

W

TCE (–)

EXT

Trans Clck Ext (–)

23

 

 

 

 

 

Page 3-3

© 1999, ADC Telecommunications, Inc.