Adtran Express XL User Manual

61200070L1-1

Express XL/XLT User Manual

143

Appendix D

Connector Pinouts

Table D-A

IBM/AT Style EIA-232 Interface

I = Input

O = Output

N/A = Not Applicable

N/C = Not Connected

Table D-B

RJ-45 ISDN BRI U

Pin

Name

I/O

Description

1

CD

N/C

Carrier Detect

2

RD

O

Receive Data

3

TD

I

Transmit Data

4

DTR

N/C

Data Terminal Ready

5

GND

N/A

Signal Ground

6

DSR

N/C

Data Set Ready

7

RTS

I

Request to Send

8

CTS

O

Clear to Send

9

RI

N/C

Ring Indicator

Pin 4

Ring

Pin 5

Tip

MAINTENANCE

ISDN

BRI U