Sorry for jumping in, but how do those boxes work? Does the box pick up the line, waits for a few seconds, and ...
- if it gets a FAX tone, it will direct the call to the fax plug
- if it gets nothing, it will forward it to the phone plug?
But if it's a voice call, will users just get silence for several seconds, or does the box simultaneously listens to the incoming call to tell if it's fax or voice, and also play a ring tone so, in case it's a human calling, the caller thinks the phone is still ringing?