On Thu, 21 Nov 2019 18:16:08 -0000, Brian Gaff \(Sofa\) wrote:

They need to get a better codec for phones generally as you can clearly
hear which they are by the grittiness and the gargling effects and
reduction in presence as the lines get more congested.

Mobiles yes but not proper VOIP calls. Unless you are trying to use
VOIP over an iffy mobile data link rather than a stable
ADSL/VDSL/FTTP connection but even then it's just drop outsrather
than the mangled donald duck noises that mobiles produce.

--
Cheers
Dave.