Paradyne Hotwire 7975 User Manual page 109

7975-A2-GB20-40
Table C-3. X.21 Cable Interface
Signal
Signal Common
Transmitted Data
Received Data
Request-to-Send
Data Channel Received Line Signal
Detector
Transmit Signal Element Timing
(DTE Source)
Receiver Signal Element Timing
(DCE Source)
December 1998
Cables and Pin Assignments
CCITT
Number Direction
102 —
103 To DSU/CSU
104 From DSU/CSU
105 To DSU/CSU
109 From DSU/CSU
113 To DSU/CSU
115 From DSU/CSU
Pin
8
2 (A)
9 (B)
4 (A)
11 (B)
3 (A)
10 (B)
5 (A)
12 (B)
7 (A)
14 (B)
6 (A)
13 (B)
C-7