I believe the resurgence in VoIP technology is partly due to the Unified Communication platforms that ride on VoIP / SIP trunks… there are a few other reasons VoIP is once again on the horizon as pointed out by this article.

If you’re business has an old T1, feeding an out-dated, legacy, on-prem PBX, then you should definitely consider ValuTel PBXware.  Contact me for an informative consultation how VoIP can not only reduce communication costs, but also provide modern communication features.

https://europe.businesschief.com/technology/1812/Feature:-Why-years-after-the-hype-VoIP-for-businesses-is-hot-again