is above possible or do I need to take another line put the BB there and move this line to VOIP? I would like to keep my current number in 2 places which is why I need the voip
Provided the VoIP provider supports it then, yes, you can PORT (Move) your PSTN phone number to an Internet based VoIP service. I suspect Vonage can do it and I know Voipfone do too.
However keeping the line for broadband might be a problem because porting a number tends to cease the line at the same time (Openreach still aren't setup for broadband-only style naked connections), but as it's not something I've ever attempted then I'm not best placed to advise. The alternative might be to forward your PSTN number to a separate VoIP one.
Thanks Mark I'm thinking to get a new line from AAISP and port the number to VOIP provider. if the voip provider go bust will I loose the number ? or BT still owns it ?
I thought about forwarding but then I have to keep paying the line rental to BT + call charges
I'm not sure. I think the main problem is that numbers tend to be distributed as part of a service, rather than the number being under the direct customer's ownership, so if a VoIP provider did go bust then I imagine that might cause some problems.
If the number you are talking about is BT then, even if you port a few times, it always relies on BT to ensure the calls get to their new ported destination.