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Paradyne 3163 User Manual

Page 112

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ACCULINK 3163 DSU/CSU

D-12

March 1999

3163-A2-GB20-10

Table D-7

X.21 Cable Interface

Signal

CCITT

Number

Direction

Pin

Signal Common

102

8

Transmitted Data

103

To DSU/CSU

2 (A)
9 (B)

Received Data

104

From DSU/CSU

4 (A)

11 (B)

Request-to-Send

105

To DSU/CSU

3 (A)

10 (B)

Data Channel Received Line Signal Detector

109

From DSU/CSU

5 (A)

12 (B)

Transmit Signal Element Timing (DTE Source)

113

To DSU/CSU

7 (A)

14 (B)

Receiver Signal Element Timing (DCE Source)

115

From DSU/CSU

6 (A)

13 (B)