Eia-530-A-To-X.21 Cable Interface - Paradyne 3160-A4 Operator's Manual

E. Pin Assignments

EIA-530-A-to-X.21 Cable Interface

The EIA-530-A-to-X.21 adapter
the X.21 interface shown in
Figure E-9.
Table E-9.
E-14
530 DB25
SIGNAL PLUG
TD-A 2
TD-B 14
RD-A 3
RD-B 16
RXC-A 17
RXC-B 9
RTS-A 4
RTS-B 19
RLSD-A 8
RLSD-B 10
SIG. COMMON 7
TT-A 24
TT-B 11
EIA-530-A-to-X.21 Adapter
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)
March 2001
(Figure E-9, EIA-530-A-to-X.21
Table E-9, X.21 Cable Interface.
ITU-T Number
102
103
104
105
109
113
115
Adapter) provides
X.21
DB15
SIGNAL
SOCKET
2 TD-A
9 TD-B
4 RD-A
11 RD-B
6 RXC-A
13 RXC-B
3 RTS-A
10 RTS-B
5 RLSD-A
12 RLSD-B
8 SIG. COMMON
7 TT-A
14 TT-B
Direction Pin
— 8
To DSU/CSU 2 (A)
9 (B)
From 4 (A)
DSU/CSU 11 (B)
To DSU/CSU 3 (A)
10 (B)
From 5 (A)
DSU/CSU 12 (B)
To DSU/CSU 7 (A)
14 (B)
From 6 (A)
DSU/CSU 13 (B)
3160-A2-GB24-10
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