Patton SmartNode 1000 Series Getting Started Manual page 99

SmartNode 1000 and 2000 Series Getting Started Guide
Figure 60 shows the cables that are required to connect the serial port of a SmartNode 2300 to a standard X.21
or V.35 network termination unit (NTU).
Connecting cables
Table 31. Serial port V.35 and X.21 signals
Signal V.35
Pin Description
12 TXDa
16 TXCb
21 RXCb
22 RXCa
23 TXCa
25 CTS
6 • SmartNode 2300 installation
Signal X.21
Pin Description
21 SETb
22 SETa
23 INDa
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