Subj : The transport layer in the OSI model. To : Tommi Koivula From : Bj”rn Felten Date : Mon Jun 10 2019 21:01:00 TK> Yes. The transport media can be fiber, copper, radio, pigeon... Anything. Just like Fidonet... 8-) ... --- Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.1.16) Gecko/20101125 * Origin: news://eljaco.se (2:203/2) .