Gets or sets the state of the telephony module device. Determines whether the device is installed and whether it is turned on/off. This property can be used to switch the telephony module device on/off.
| Exception Type | Condition |
|---|---|
| ArgumentException | Unsupported value has been set. Only PhoneDeviceState.Off and PhoneDeviceState.On values are allowed. |
Phone Class | Resco.Phone Namespace | PhoneDeviceState