Скачать или смотреть curiosity teardown: wireless home phone interface

Today's teardown victim is a ZTE WF720, which is (or was) a way to connect old-school landline phones to the cellular phone network.

Here's a user manual i found for this unit, if you're interested: https://www.att.com/support_static_fi...

And here are the datasheets for the 2 main chips:

qualicom chip
https://www.digchip.com/datasheets/do...

telephony chip
https://www.alldatasheet.com/datashee...

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This isn't the only way to do it.
It's probably not the best way to do it.
But it's how I did it.