Here is a good article on standards, based on UK business primarily but it hits home.

Yet the evolution of VoIP will follow a predictable path. It’s all about the money. Because the incremental cost of adding VoIP to broadband is effectively zero, broadband users are migrating to VoIP in droves. For a while, there will be revenues from PSTN gateways — but not for ever: the cost of using VoIP on broadband is actually zero, so the existing users will draw more people into broadband subscriptions. Eventually, it will become cheaper for BT to service the remaining PSTN customers with a broadband connection and VoIP disguised — and billed — as an ordinary telephone. For telephony, the digital switchover will be complete.


Privacy Settings
We use cookies to enhance your experience while using our website. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. We also use content and scripts from third parties that may use tracking technologies. You can selectively provide your consent below to allow such third party embeds. For complete information about the cookies we use, data we collect and how we process them, please check our Privacy Policy
Consent to display content from Youtube
Consent to display content from Vimeo
Google Maps
Consent to display content from Google
Consent to display content from Spotify
Sound Cloud
Consent to display content from Sound