Pin Assignments

EIA 530A Port

Interface Connector

The EIA 530A Port Interface DB25 connector information is shown in Table D-5.

Table D-5

EIA 530A Port Interface DB25 Connector

Signal

Circuit

CCITT

Direction

Pin

Mnemonic

Number

 

 

 

 

 

 

 

 

Shield

Ð

Ð

Ð

1

 

 

 

 

 

Signal Common

AB

102A

Ð

7

 

 

 

 

 

Signal Common

AC

102B

Ð

23

 

 

 

 

 

Transmitted Data

BA

103

To DSU/CSU

2 (A)

 

 

 

 

14 (B)

 

 

 

 

 

Received Data

BB

104

From DSU/CSU

3 (A)

 

 

 

 

16 (B)

 

 

 

 

 

Request-to-Send

CA

105

To DSU/CSU

4 (A)

 

 

 

 

19 (B)

 

 

 

 

 

Clear-to-Send

CB

106

From DSU/CSU

5 (A)

 

 

 

 

13 (B)

 

 

 

 

 

Received Line Signal Detector

CF

109

From DSU/CSU

8 (A)

 

 

 

 

10 (B)

 

 

 

 

 

DCE Ready

CC

107

From DSU/CSU

6

 

 

 

 

 

DTE Ready

CD

108/1, /2

To DSU/CSU

20

 

 

 

 

 

Transmit Signal Element Timing (DTE Source)

DA

113

To DSU/CSU

11 (B)

 

 

 

 

24 (A)

 

 

 

 

 

Transmit Signal Element Timing (DCE Source)

DB

114

From DSU/CSU

12 (B)

 

 

 

 

15 (A)

 

 

 

 

 

Receiver Signal Element Timing (DCE Source)

DD

115

From DSU/CSU

17 (A)

 

 

 

 

9 (B)

 

 

 

 

 

Local Loopback

LL

141

To DSU/CSU

18

 

 

 

 

 

Remote Loopback

RL

140

To DSU/CSU

21

 

 

 

 

 

Test Mode

TM

142

From DSU/CSU

25

 

 

 

 

 

3170-A2-GB20-20

December 1996

D-7

Page 122
Image 122
Paradyne 317x E1 manual EIA 530A Port Interface Connector, Direction Pin Mnemonic Number