sbiddle:xlinknz:Surely it would not be a good look if there is a death(s) because a 111 call was unable to made due to the handset that made the call did not support VoLTE. I wonder if the appropriate govt organisation responsible for 111 is aware of this issue?
Yes they are fully aware of it. It was MBIE who funded (and for all intents and purposes designed) the RCG solution. That's why this subject and threats of complaints to the Commerce Commission really don't make any sense.
As also pointed out already it also means somebody roaming in NZ will have zero access to voice services in a RCG only coverage area even if they have a VoLTE compatible phone since there are currently no 4G VoLTE roaming agreements.
Likewise if you leave NZ with say a Vodafone iPhone with VoLTE and connect to a roaming network that only has VoLTE for voice (which will happen in the US within the next year as some networks remove 3G) you will not be able to make a voice call as their are no VoLTE roaming agreements in place.
You actually dont want to 'roam' on regular ol voice onto another network anyway if you have some sort of VoLTE because like others have said, VoLTE is basically data/packet based voice, which means wifi calling will most likely be available on the same device too. Then you can cram all the VoLTE packets through wifi, even when you are oversea, and get local rates.
The best and cheapest setup on modern iphone is to keep the main line on one sim, disable roaming, then have a second sim for data based in another country wherever you are at.
Then you can still receive calls on your main nz line through wifi calling/volte, even when you are oversea, using the 'data' pipe from the local sim.
Reason why volte/wifi calling kinda go hand in hand and hard to enable is because it essentially opens a pipe directly to the telco's backend. And besides the security implications, a lot of the manufacturers wouldn't really be bothered to get it done in order to save money.
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