Short name: RI State
Requires: Base Development System
Classes: Instr, Serial Instr
Specifies the current state of the Ring Indicator (RI) input signal. The RI signal is often used by modems to indicate that the telephone line is ringing. This property is read only except when the Wire Mode property is set to RS232/DCE or to RS232/AUTO with the hardware currently in the DCE state.
| -1 | Unknown |
| 0 | Unasserted |
| 1 | Asserted |
The following table lists the characteristics of this property.
| Data type | |
| Permissions | Read/Write |