Can the handset LED be maniuplated without using a Notification object?

Good day all,

I would like to be able to control the LED on the handset with finer grained control than is offered by the Notification object. Notifications allow one to change the rate of flashing; e.g. 300 milliseconds on, 1000 milliseconds off, but that's it.

Essentially, I would like to turn the LED on and off at will at arbitrary times. Does anyone know if this is possible?