Have voice mail,in coming calls get busy signal. Dial tone is not the issue, we have dial tone & If it was a phone causing a busy signal should it not go to voice mail.
Hello. Has this been resolved for you? If you have everything working at the ONT, that means that your issue is inside. Possible causes are equipment (phones, fax machine, answering, etc.) or inside wiring (jacks, junction boxes, wiring, etc.) Please message me if you are still not able to receive phone calls.