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Rs449 port interface connector – Paradyne ACCULINK 316x User Manual

Page 174

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ACCULINK 316x DSU/CSU

D-10

December 1996

3160-A2-GB22-10

RS449 Port Interface
Connector

The RS449 Port Interface connector information is

shown in Table D-8 and Figure D-7.

Table D-8

RS449 Port Interface Connector

Signal

Circuit

Mnemonic

CCITT

Number

Direction

Pin

Shield

1

Signal Ground

SG

102A

19

Receive Ground

RC

102B

20

Send Common

SC

37

Send Data

SD

103

To DCE

4 (A)

22 (B)

Receive Data

RD

104

From DCE

6 (A)

24 (B)

Request-to-Send

RS

105

To DCE

7 (A)

25 (B)

Clear-to-Send

CS

106

From DCE

9 (A)

27 (B)

Receiver Ready

RR

109

From DCE

13 (A)
31 (B)

Data Mode

DM

107

From DCE

11 (A)

29 (B)

Terminal Ready

TR

108/1, /2

To DCE

12 (A)
30 (B)

Terminal Timing

TT

113

To DCE

17 (A)
35 (B)

Send Timing

ST

114

From DCE

5 (A)

23 (B)

Receive Timing

RT

115

From DCE

8 (A)

26 (B)

Local Loopback

LL

141

To DCE

10

Remote Loopback

RL

140

To DCE

14

Test Mode

TM

142

From DCE

18