Instruction Manual

ECM-VX900 Quick Installation Guide
12 ECM-VX900 Quick Installation Guide
2.3.4 Serial port 1 (COM1) signal selector (JRI1)
* Default
Ring*
+5V
+12V
2.3.5 Serial port 2 (COM2) signal selector (JRI2)
* Default
Ring*
+5V
+12V