New 930L user and new member here.
I am now a caregiver for an elder family member. To increase their ability to live independently, I've installed 3 930L cameras covering most key areas of their living spaces. I am puzzled by our version of the audio interference issue. When I log into the My DLINK website and select a camera via the website from the relative's home via AT&T DSL, I get clear audio. When I log into My DLINK website from work, I get variably either an initial buzz, or intermittent dropouts or intermittent buzzes, each of the latter two at intervals of about 2 seconds (or roughly 30 cycles per minute). I don't know if this is significant to the problem, but thought I would share as it seems a bit different from the versions you good folks have reported.
Regards, eds