Two-way audio (only) device that uses WIFI?

So far I haven't been able to find any device that does this. I have tried wifi cameras in my elderly parent's house, both the Tapo C120 and Wyze V3. Both are great for capturing video, and both feature "two way audio" which ideally I would be able to use to communicate with them. The problem is the two way audio is very bad (worse on the Tapo), very hard to hear, with lots of lags. (Just to state the obvious, I know a phone call could accomplish what I'm looking for, but in this case isn't feasible which is why I'm looking for a wifi connected device).

So I was thinking it would be great if there was a wifi device that featured two way audio, like the wifi cameras, but didn't have video.. thinking that if the device was transmitting audio only, it would probably/possibly have better audio quality. But I can't find any product like this, so can't even read a review to see if the audio is any good.

Beyond these wifi cams, I do not have much experience with smart home devices, so might be missing some obvious way to do this. Would an Amazon echo device be able to do something like this? Really the only requirement is that my parents wouldn't need to do anything on their end except go up to the device and talk to it. Again, like they can with the wifi cameras I mentioned, but with usable audio. Thank you.