I use Solicall. The software version is free. They also do another version for the hardware world but I don't know much about it, I'm afraid. I use it in conjunction with Voipfone (software phone). For a one-off payment of a euro I got myself a number to accept incoming calls to Voipfone. I recently had phone calls from Virgin regarding a direct debit they had failed to use - they were chasing around 18 mths worth of payments. I immediately asked them to call my voip number and informed them it would be recorded. Always good to tell them as it puts them on the backfoot and ensures they are more careful about what they say. I also use Solicall to record podcasts.