In most cases any problems with VOIP after its all set up and working will be an ISP issue as once the ATA has internet it will just log in. If there was an outage at the provider then they wouldnt blame the ISP
but rule of thumb is if internet works but VOIP does then its the VOIP problem if no internet you would have other problems not just voip
Many voip providers can provide preconfigured hardware that you just plug in and go.
The advantage I see in having seperate providers is if you change internet provider you dont have worry about moving your landline I have an issue with sky business where they badly ported the number for a company and all the lines were down. that wouldnt of been a problem with VOIP as a mobile dongle would kept the line up (and the internet) while shy were fixing the internet problem.
I would always get then separately.
Edited by pyarwood (Tue 01-Oct-24 02:31:29)