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I’m curious about how this works, can you link me someplace where I can read more about it? I tried searching for “cellular over wifi” but wasn’t about to find
by egwynn 4y ago
I’m curious about how this works, can you link me someplace where I can read more about it? I tried searching for “cellular over wifi” but wasn’t about to find anything promising.
EDIT: I searched harder and found “VoWiFi”. It looks like this can support SMS and is supported by iOS. TIL.
- __derek__ 4y agoBingo. My carrier offers it as Wifi Calling. It worked surprisingly well.
- Anunayj 4y agoFor someone more curious, I tried to learn more about this tech, and this [1] is the best resource I found about someone explaining how it works. Essentially VoWifi connects to your ISP via a IPSec VPN using secrets derived using your sim card as a smart card, then connects to a internal SIP server and voila. I spent a lot of time trying to connect to the IPSec server from a computer, but couldn't figure out how to get the challenge solved by my sim. Gosh I wish I could make normal calls from my computer. 1. https://worthdoingbadly.com/vowifi/ https://worthdoingbadly.com/vowifi/
- egwynn 4y agoThanks for this link! This is a great explanation which clears a lot of things up to me.
- stevewatson301 4y agohttps://en.wikipedia.org/wiki/Generic_Access_Network https://en.wikipedia.org/wiki/Generic_Access_Network