Clearly false. Analog voice service is limited to 300–3,300 Hz, and being analog, subject to line noise/static/etc. About the only constant with it was that pe

Clearly false. Analog voice service is limited to 300–3,300 Hz, and being analog, subject to line noise/static/etc. About the only constant with it was that people would hold handsets up to their heads that were purpose-built, and reliably had a decent minimal level of quality. With IP-based conferencing, you get as good as the worst link. A lot of people use built-in microphones on their laptops in a noisy room, and so the audio sounds like garbage. The people with consistently high quality have gaming-style headsets (or really, any >$100 headset). There's a couple people I talk with that have (inexpensive) studio-style microphones on boom arms, and they sound phenomenal. Of course it could be you. If you're listening using garbage headphones or the built-in speakers in your laptop, it doesn't really matter how great other people's microphones are. You're clearly misremembering the quality of analog phone lines; at their worst they're better than a bad IP-based service, but at their best they are blown out of the water by people that put even a modicum of effort into their setup.