ACCULINK 336x E1 NTU
D-12
December 1996
3360-A2-GB20-20
Table D-8
X.21 Cable Interface
Signal
CCITT
Number
Direction
Pin
Signal Common
102
—
8
Transmitted Data
103
To NTU
2 (A)
9 (B)
Received Data
104
From NTU
4 (A)
11 (B)
Request-to-Send
105
To NTU
3 (A)
10 (B)
Data Channel Received Line Signal Detector
109
From NTU
5 (A)
12 (B)
Transmit Signal Element Timing (DTE Source)
113
To NTU
7 (A)
14 (B)
Receiver Signal Element Timing (DCE Source)
115
From NTU
6 (A)
13 (B)
