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Serial port
153
SmartNode 1000 and 2000 Series Getting Started Guide
D • Port pin-outs
Serial port
The serial port is configurable to work in either V.35 or in X.21 mode. A standard D-subminiature female
socket with 25 positions is used.
Note
Pins not listed are not used.
Note
Pins not listed are not used.
Table 46. Serial port V.35 signals
Pin
Signal V.35
1
Frame Ground
4
DCD
6
DTR
7
Signal Ground
8
RTS
9
RXDa
10
RXDb
11
TXDb
12
TXDa
16
TXCb
21
RXCb
22
RXCa
23
TXCa
25
CTS
Table 47. Serial port X.21 signals
Pin
Signal X.21
7
Signal Ground
9
RXDa
10
RXDb
11
TXDb
12
TXDa
13
CNTb
14
CNTa
16
INDb
21
SETb
22
SETa
23
INDa