That's great, is there an app that will do this, like put it down next to your landline phone and let it answer for you?
If you look at the reddit sidebar there's a phone number you can forward to or conference in
I saw a SIP number. If there's a POTS number to forward to doesn't the forwarder then pay for the call? With a local responder app there would be no call charge - I don't want this enough to pay for half-hour international call forwarding.