Paradyne 9161 Reference Manual page 242

Cables, Connectors, and Pin Assignments
E-10
The following table provides the pin assignments for the 25-position Sync Data
connector/interface and a DTE's 37-position RS449 connector.
Signal
Shield
Transmit Data ( TXD/ TD )
Receive Data ( RXD/ RD )
Request to Send ( RTS )
Clear to Send ( CTS )
Data Set Ready/ Data Mode
( DSR/ DM )
Signal Ground (SG)
Data Channel Received Line
Signal Detect / Receiver Ready
( RLSD/ RR )
Transmitter Signal Element
Timing/Transmit Timing ( TXC ) —
DCE Source
Receiver Signal Element Timing/
Receive Timing ( RXC ) —
DCE Source
Local Loopback ( LL )
Data Terminal (or DTE ) Ready
( DTR/ TR )
Remote Loopback ( RL )
Receive Common ( RC )
Transmitter Signal Element/
Terminal Timing ( TT ) —
DTE Source
Test Mode ( TM )
no connection
September 1997
25-Pin
Plug
ITU/
Pin # Direction
CCITT #
— 1 —
103 2 ( A ), To DCE
14 ( B )
104 3 ( A ), From DCE
16 ( B )
105 4 ( A ), To DCE
19 ( B )
106 5 ( A ), From DCE
13 ( B )
107 6 From DCE
102A 7 —
109 8 ( A ), From DCE
10 ( B )
114 15 ( A ), From DCE
12 ( B )
115 17 ( A ), From DCE
9 ( B )
141 18 To DCE
108/1, /2 20 To DCE
140 21 To DCE
102B 23 —
113 24 ( A ), To DCE
11 ( B )
142 25 From DCE
— — —
37-Pin
Socket
Pin #
1
4 (A),
22 (B)
6 (A),
24 (B)
7 (A),
25 (B)
9 (A),
27 (B)
11 (A)
19
13 (A),
31 (B)
5 (A),
23 (B)
8 (A),
26 (B)
10
12 (A)
14
20, 29
17 (A),
35 (B)
18
30, 37
9161-A2-GH30-20