One of my favorite telecom analysts has always been, and remains Iain Gillott from iGR. I first met Iain when he was with IDC before breaking off and establishing his boutique consultancy. Long a watcher of wireless and mobile, today his firm announced the publication of a report on Voice over LTE or VoLTE for short. This is on the heels of a Metro PCS rolling out VoLTE a few weeks back which was reported on by GigOm's Kevin Fitchard back on August 8.
Having had the good fortun to have Iain on panels at conferences and also watched his work for some time, the report will offer concise and credible content that will shed a deeper light into what may become the next generation of voice over mobile networks.
VoLTE is a long term play for the mobile operators, as Gillott points out. I agree, as it's not exactly happening overnight where a switch is thrown and voice traffic moves from the circuit switched networks of the carriers over to LTE.
Back in May of this year (2012) and even earlier pal Dean Bubley had some thoughts on VoLTE as well. Between Gillott and Bubley, the perspectives provide the kind of insight mobile watchers should be aware of on this subject.