A There is a lot of talk and some confusion around the value of voice over Wi-Fi: It will take some time for the market to figure out how extensively it should be used.
I think voice over Wi-Fi can be really useful to certain workers, but the current products have so many shortcomings that a company must have enough of those workers and be able to benefit enough to suffer through the headaches. Voice over Wi-Fi will become a routine service only if the products improve significantly.