X.21 Serial Port - Patton SmartNode 4960 Series Getting Started Manual

SmartNode 4960 Getting Started Guide

X.21 Serial Port

X.21 Serial Port

Table 21. X.21 Female DB-15 connector
X.21 Interface Pin-Out
Pin No. Signal Name
1 Signal Ground
2 Transmit (Data)-d
3
4 Receive (Data)-a
5
6 Signal Element Timing (Clock)-a
7
8 DTE Common Return
9 Transmit (Data)-b
10
11 Receive (Data)-b
12
13 Signal Element Timing (Clock)-b
14, 15
Control-a
Indication-a
-
Control-b
Indication-b
-
D • Port pin-outs
68