mo, you're saying I'm implying that *Verizon & att, aren't caving in to wifi calling* when I could care non the less;
you injected that in my reply to -
'..Interestingly, I was just reading that as LTE and VoLTE become the norm and carriers repurpose 2G and 3G bandwidth for LTE, we could finally get a world where phones are completely interoperable between all networks (it would be simpler to have a single LTE radio that covers all necessary frequencies, than the current hodge podge of GSM, UMTS, LTE, CDMA radios in a single phone). I imagine if that ever happens, it's a long way off..."
my post was pointingly at the schematics of how att & Verizon would pimp their data channels in the future;
every carrier could have implemented wifi / data calling years ago, via sip, actually VOlte speaks sip at the ims -
The VOLTE “Conversation” Between IMS and LTE - Bob - Expert Opinion - LTE University ..that article is dated 2012..
sprint's implementation of wifi calling still permits the handset to have a cellular connection, you CAN'T place the handset in airplane mode then toggle wifi & utilize the feature, the mobile radio MUST be on, so go figure on that..
I have no idea if it's the same with tmobile, or if it'll be the same with att or Verizon..
but wait, if it's handshaking at the ims (within the cellular infrastructure) , for QoS & bearer info, then yes, the same applies!
embedded vs over the top;
you're saying you won't get the job done until the conditions are right, so you'll wait for the embedded system to fall into place, (nothing wrong with that, at all)
me? I need the job done now, so I'm going to work with what I have in front of me, & make it so -
just for sakes earlier I made 3 business calls to 3 agencies via hangouts on evdo 3g, they never knew the difference, my caller id showed the same -
View attachment 138377
I've called these same agencies via the new grooveIP / ringto number I have via the same evdo 3g connection, though they didn't recognize the number as *being me* my call was answered, & our conversation blossomed. ( actually, even if it were any foreign number, what difference would it make that the number you were using, if the call behind it were critical?; you may have not had utility to your own phone, & needed another number, *but you got to call* that's the important thing..)
I'm on sprint now with gv integration, for international travel, I know for sure the hangouts "over the top" solution bests those of sprint, & vice versa, the rates calling internationally would be cheaper..
to top that off, the *hangouts nonsense* as you called it, doesn't limit me to just wifi, my phone can have any data connection , hspa+, wcdma (dare I say edge, slap me if I stand corrected), lte, it's the same difference..
the liberation, on the same handset, not sanctioned..