In confidential cover sheet June 5, 2020 1 Min Read Share Share on Facebook Share on Twitter Pinterest LinkedIn Tumblr VKontakte Email This medium works by a fax machine which is put at both ends of the communication that is at the end of the sender, and also at the receiver end as well. 0 Write A Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. Δ