Dte Adapter Cable (Models 9820, 9820-2M, 9820-8M - Paradyne 9820 User Manual

Connectors, Cables, and Pin Assignments
X.21 DTE Adapter Cable (Models 9820, 9820-2M, 9820-8M)
C-8
This adapter is used to connect the user data port to a DTE with an X.21 cable.
It is a 25-pin EIA-530A-to-15-pin X.21 (DB25-to-X.21) adapter cable.
This cable (Part No. 035-0302-0131) is part of the X.21 Cable Kit (Feature
No. 9008-F1-521).
The following table provides the pin assignments for the DB25-to-X.21 adapter
cable.
Signal
Transmit Data ( TXD )
Received Data ( RXD )
Received Signal Element Timing
( RXC ) — DCE Source
Request to Send ( RTS )
Data Channel Received Line
Signal Detector ( RLSD or LSD )
Transmit Signal Element/
Terminal Timing ( TT ) —
DTE Source
Signal Ground/Common ( SG )
June 2000
98-15883
25-Pin
Plug
ITU # Pin # Direction
103 2 ( A ) To DCE
14 ( B )
104 3 ( A ) From DCE
16 ( B )
115 17 ( A ) From DCE
9 ( B )
105 4 ( A ) To DCE
19 ( B )
109 8 ( A ) From DCE
10 ( B )
113 24 ( A ) To DCE
11 ( B)
102 7 —
15-Pin
Socket
Pin #
2 ( A )
9 ( B )
4 ( A )
11 ( B )
6 ( A )
13 ( B )
3 ( A )
10 ( B )
5 ( A )
12 ( B )
7 ( A )
14 ( B )
8
9820-A2-GB20-20