If Force 9 is ADSL you do have your Microfilter/s fitted don't you ?? click here
Sorry if you have but you didn't mention microfilters in your post so I thought you may have overlooked them :o)
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?