I've setup VoIP deployments at a few small sites over the years, usually Asterisk+FreePBX in a VPS. Works really well for distributed teams. My go-to SIP trunk provider has always been voipfone.co.uk, often with Gradwell as a backup route.
But now there's a relative who is moving house and wants to keep their long-standing BT geographical number. Port it to voipfone, easy!
But I'm not clued in on the home/SOHO analogue VoIP adaptors available on the market. I've only ever used full SIP phones or PCI analogue adaptors (some years ago).
I'm looking for something that will allow me to connect their existing BT DECT handsets to receive incoming VoIP calls from their old number, ported to voipfone. Easy.
But are there any that will also allow me to connect their new BT landline?
So their existing DECT handsets can make/receive landline and VoIP calls?
Would be awesome if it can do least-cost-routing as well.
Obviously I could deploy a small Asterisk+FreePBX box for this but I'm not too keen on supporting that within my existing "family IT support contract" framework