I have had 7 Verizon service calls in the last 11 days due to buzzing in the phone line. I have FiOS Internet and POTS phone connected to FiOS. They finally ran completely new lines yesterday and changed the ONT panel but it still wasn't great. Two DirecTV issues occur: 1. When the HR24 is connected with a phone line, the buzz gets noticeably worse. 2. With the Broadband DECA connected to my router, the buzz gets noticeably worse. I switched the DECA to an adjacent network switch and it got a little better but it's not great. There are definitely some related issues going on between DirecTV and the Verizon service. I have read some posts referring to ground loops, etc. Verizon is supposed to come for an 8th time tomorrow. They were convinced that the Broadband DECA was the culprit but it's completely disconnected and unplugged now. I'm still having phone issues. DirecTV is supposed to come Tuesday. I thought they could look into Satellite grounding issues that may be at play. This may also be causing some problems with my H25-500 connection with some horizontal interference with a component cable. Maybe the cable is just bad. Of course, it's a proprietary cable. I powered off the SWM system by turning off the surge protector the SWM is plugged into but the phone issue remains. So now my Broadband DECA and phone lines are not connected to DirecTV. Power and ethernet is disconnected from the broadband deca. Those components would exacerbate the phone issue although those issues remain regardless. So what do you experts believe? Verizon issue, DirecTV issue, electrical issue or a combination?