The main hurdle is getting carriers to support it from end to end on their networks. Then providers like Voipo can pretty much just turn it on at any time.

One nice thing about G.722 is that it really doesn't use any more bandwidth that G.711. So it's a win-win.

I'm not sure why carriers are so slow to implement it, since the patents have expired, and it is a fairly simple thing to add or enable it on existing systems.

In my estimation and opinion, G.722 is still a year or more away from getting that initial momentum it needs. But once it gains traction, I would expect it to really take off quickly.

Meanwhile, you can still use G.722 for internal calls between extensions, virtual conference rooms, etc.

That said, if you're having audio quality issues with G.711, then going to G.722 probably won't help much, since it is likely a bandwidth or priority issue on the network.

But if you are getting solid audio with G.711, then moving to G.722 would likely yield impressive results.