With Verizon 650, three-way/conference calling doesn't work. I call the first person, put them on hold, add another call. It looks like it's working, but the second call never dials and it never rings on the other end. The screen shows both however, like it's really working.

Verizon tech support seems baffledd and I need to figure this out before a conf. call I need to make tomorrow. Verizon says conferencing calling is enabled and they even reset that option. I did a soft reset.

Any ideas?