ADTRAN XRT User Manual
Page 90
Appendix E. Connector Pinouts
78
Express XR/XRT Quick Start Guide
61200.153L1-1
PIN 1
PIN 13
PIN 14
PIN 25
MALE
Figure E-2
Modem Interface
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
I = Input
O = Output