Voice 2.0 delivery models

In a recent short report on Voice 2.0 we took an early look at how various vendors and service providers are approaching the delivery of these communications aware mashups. I think it is fair to comment that the delivery models are yet to be established. These short interactions with Sylantro and MetaSwitch present a couple of contrasting views and should be viewed along with posts like the ones on Broadsoft and Ribbit.