How do I connect Raspberry pi to a landline phone at home and use it as a programmable analog phone?
I would like to know if there is a way to communicate with incoming and outgoing calls and voice as an analog phone, rather than using external services such as Twilio and Google Voice or using VoIP adapters as IP phones.
I bought a voice modem and tried connecting it, but it seems that the voice modem can't communicate analog voice, although it can be sent and received by AT command.
If you know anything about it, please take good care of me.
raspberry-pi
I think you can do it by connecting a VoIP router or VoIP gateway to a raspy.
I think the following will be helpful.
https://www.voip-info.jp/index.php/%E3%82%A2%E3%83%8A%E3%83%AD%E3%82%B0%E5%9B%9E%E7%B7%9A%E3%81%AE%E6%8E%A5%E7%B6%9A
Connecting your own devices to a public phone line is not legally possible (technically) and must go through some kind of phone line-to-IP conversion equipment.
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