I am aware that BT have an optional Digital Voice service which is supported by their Fibre hub and I believe it may only be supported by their hub. This would give you a single line/number. I am aware that a standard single line VoIP account from various providers would be run over FTTP with either a VoIP device/client or a single port ATA.
I am also aware that businesses could get a SIP trunk service which supports multiple lines/numbers although it is less clear whether some providers would support this over a 'consumer' grade FTTP circuit.
My query is about options that might be considered to be in the middle ground between these two options. The two following possibilities seem potential options.
1. Multiple individual VoIP lines converted from SIP to analogue connections using an ATA - analogue terminal adaptor with multiple ports
2. The above but also supporting the equivalent of the old analogue 'call hunting group' feature
The later would be particularly useful for supporting still working analogue phone systems. I believe the former is already possible with various multiport ATA products but I have seen no discussions about how call hunting groups could be achieved.
It could be that a SIP trunk device which then converts to multiple analogue ports would be the way to achieve this.
Does anyone have suggestions for suitable products? Does anyone have suggestions for VoIP providers suitable for this?