I've never heard of it either, and I'm an electrical engineer since 1979.
I asked the chat person and they said it means they are seeing a noisy device on my end.
I thought disrupters are what spacemen like Captain Kirk used...
So when I ended the chat session, I basically stripped everything off except one line direct to the modem direct to the PC, and no change. So I doubt there is anything noisy here.
I did another chat, I'm waiting for a Telus call-back.