I just installed an Eugenius Durafon Pro behind an Avaya Partner with 2 handsets, each with their own extension off the Partner. Works great except for one thing. The Durafon seems to be amplifying hum on some Verizon loops start lines. Its noticeable to outside callers, but not enough to hinder a call. Just plain jane annoying. Is there something I can do with the Durafon to tap that down a bit? Is there a noise filter I can put on the lines to pad that hum?


St Petersburg