Jose wrote:

> In my case, that's good enough for outgoing calls to landline numbers,
> only; doesn't work for calls to mobiles, neither for incoming VoIP
> calls :-(
>
> Maybe the SPA-3103 wil do it, or some other manufacturer sees a niche
> there ;-)

An orchid dialler box is very cheap. It's the obvious solution, except
that unless you use the version with a PSU, you may lose incoming CLI.