This question is strictly out of idle curiosity, because even if it works, it's more hassle than it's worth.

Anyway, I don't currently have a 2-line phone, so I can't test this myself. But 2-line phones I owned in the past often allowed the bridging of the two lines within the phone itself, so you could have three-way calling without using any telcom switch features.

My question is: if you theoretically take such a 2-line phone as above, make separate 3-way calls on each of the cloned lines (using the 3-way call feature), then bridge the two lines using the phone's bridge, you could end up with a 5-way call. Would this actually work with VOIPo's cloned lines?

Again, this is idle noggin scratching. With all the effort it takes to do the above, it would be much easier to use one of the free teleconferencing services that are advertised everywhere. Since I currently don't have a 2-line phone and don't use my cloned line at the moment, I've just wondered what real-life scenarios (besides being able to make simultaneous outbound calls) would be available once I start using my cloned line.