ADTRAN Express XRT User Manual

Page 102

background image

Appendix E. Connector Pinouts

88

Express XRT User Guide

61202.153L3-1

I = Input O = Output

Figure E-2

Modem Interface

I = Input O = Output

20

DTR

I

Data Terminal Ready

22

RI

O

Ring Indicator

Table E-B

Modem Interface

Pin

Name

I/O

Description

1

Shield

I/O

Shield for cable

2

RD

O

Received Data

3

TD

I

Transmitted Data

4

RTS

O

Request to Send

5

CTS

I

Clear to Send

7

SG

I/O

Signal Ground

8

CD

I

Carrier Detect

20

DTR

O

Data Terminal Ready

Table E-A

RS-232 Interface

Pin

Name

I/O

Description

PIN 1

PIN 13

PIN 14

PIN 25

MALE