I had selected "Block all unknown calls" on https://secure.voipo.com/features

As a result, all was peaceful until the wife could not call from work recently.
The fault seemed to be a change in how the work phones pass their info.
Internally VOIPo could fully identify the call, but no voicemail - just a message plays.

I tried a recent change. I selected "Block Calls Marked as Private" on https://secure.voipo.com
In routing I routed "All Unknown Calls" to Voice Mail.
The result is, when the wife calls home on her white-listed work number, it again rings the phone.

End result:

  • A quiet phon, ringing only when I allow it.
  • I *think* there are no calls unintentionally getting blocked.

A guess/speculation, would be that Routing is more sophisticated with more internal info to base the rules on.