What is the Voltage Supplied on the Ring Indicate (RI) pin of the RS232?
admin > 11-16-2011, 10:21 AM
All of our devices are technically DTE Devices, meaning treat RI as an INPUT ONLY and are unable to output a signal in the RI pin.  Therefore they are unable to supply any Voltage on the RI pin.
Applies to: 
All Serial Devices