Skype to DPH 50U to multiple phone problem.

Instead of wiring the DPH 50U to a single phone, it is wired into a disconnected line 2 house wiring.

I have about 8 phones plugged in throughout the house.

Some are wireless.

I can pick up any of these phones and call out on Skype.

The problem is that the incoming Skype calls ring all of these [hones and that causes an overload on the USB port.

I have switched off the ringers on all the phones with ringer switches.

I can't switch off the ringers on the electronic phones.

There are several possibilities:

1> Is it possible to boost the ringer capability of the already powered USB port?

2> Is it possible to turn off the electronic ringers?

3> Perhaps I should consider a switch to connect/disconnect some of the telephones from the line.

Is there a good solution?