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The SoC we use will also be gaining support for non-terrestrial networks soon. It’s the same feature that new iPhones have for Satellite based SOS when you’re outside of cell range. We’re not sure when it’ll be ready yet, or what the power consumption will be, but perhaps that could be something useful for this sort of use case. As far as I know it’ll support regular data traffic too, not just for emergencies.

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999900000999 3 days ago | parent [-]

Anyway to make a solid voice call?

I know you probably have better things to do, but I have mockups and some rough designs if you’d like to talk

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siliconwitch 2 days ago | parent [-]

Voice is possible over LTE-M but it’s sort of the wrong technology for it. It’s designed for low power so the data rate is quite slow and the latency won’t work for two people trying to talk to each other.

It’s a similar speed to Bluetooth LE (not Bluetooth audio which headphones use). Sub 100kBps

NTN will be even slower. Few kBps. Really intended for sensor data or machine related actions

	▲	999900000999 2 days ago \| parent [-]
		Hmm. As long as it can signal emergency services it'll be fine for what I'm thinking of. Texting emergency services a preset message like "Paramedic requested, at GPS cords..."