Thanks Shelly Ely for Info.

PASS ON TO EVERYONE YOU KNOW I received a telephone call last evening from an individual identifying himself as an AT&T Service Technician (could also be Telus) who was conducting a test on the telephone lines. He stated that to complete the test I should touch nine(9), zero(0), the pound sign (#), and then hang up. Luckily, I was suspicious and refused. Upon contacting the telephone company, I was informed that by pushing 90#, you give the requesting individual full access to your telephone line, which enables them to place long distance calls billed to your home phone number.
Photo by me. Taken 2008 of Steve with Shelly Ely.