retronetcall - ISDN B-Channel protocols (X.75, V.120, V.110, T.70, ...)
▶retronetcall - ISDN B-Channel protocols (X.75, V.120, V.110, T.70, ...) — a Chaos Computer Club (media.ccc.de) security conference talk on network (1:04:25 min). Watch the full video, indexed free on the Breach Arc Archive.
▶ Watch video on YouTube