Appendix 1: Connector Wiring
T
ieline
T E C H N O L O G Y
Page 355
1
5
6
9
5
1
6
9
Appendix 1.4.
D9 (RS 232) Data and Interface Connectors
Viewed from wiring side
Female
Male
Table 22: D9 Data and Interface Connector
Appendix 1.5.
D15 X.21 Interface Connector
The pin-outs for D-15 X.21 module connections are displayed in the following
image. A straight-through cable is required from the male D15 connector on the
X.21 module to a female DB15 connector, which will attach to an ISDN
TA/X.21 DCE Device.
Table 23: X.21 Pin-outs for D-15 Connectors
With this pin configuration all signals are balanced. The DCE (Typically ISDN
TA) provides Signal Timing, ensuring X.21 data is synchronous.
Pin INTERFACE Female
DCE
DATA Male DTE
1
No Connection
No connection
2
TX Data
RX Data
3
RX Data
TX Data
4
No connection
No connection
5
Signal Ground
Signal Ground
6
No Connection
No connection
7
CTS
RTS
8
RTS
CTS
9
No connection
No connection
Pin Signal
DTE DCE
1
Shield
-
-
2
Transmit (A)
Out
In
3
Control (A)
Out
In
4
Receive (A)
In
Out
5
Indication (A)
In
Out
6
Signal Timing (A)
In
Out
7
Unassigned
8
Ground
-
-
9
Transmit (B)
Out
In
10 Control (B)
Out
In
11 Receive (B)
In
Out
12 Indication (B)
In
Out
13 Signal Timing (B)
In
Out
14 Unassigned
