Thanks for the articles & welcome
This is what puzzles me about them not combining VoIP into the ONT. You'd think it would be easier to offer a guaranteed QoS VoIP service that way and continue to generate revenue from a phone service, plus far easier to roll out to none tech-savvy users.
I was wondering something similar. If my nearly 80-year-old nan had to install and configure router/equipment just to use her phone line, her head would probably explode.
On the flip side, having the ISP's equipment being responsible for giving access to a VoIP service keeps it fully within the provider's control without Openreach needing to poke their oar in, which would be the case if this was part of the line terminating equipment?
Fwiw, today I finished porting my BT landline over to Sipgate and it was relatively painless (besides an admin cockup on their side). Rewired my telephone extensions to be connected into the VoIP port of the router so nothing appears to have changed apart from there being £22.15 I'm not chucking at BT each month!
C