Abstract. A data link protocol developed and used by Philips Electronics is modeled and veri ed using I/O automata theory. Correctness is computer-checked with the Coq proof development system. Key words: Communication Protocols, I/O Automata, Proof-Checking, Protocol Veri cation, Type Theory.
Leen Helmink, M. P. A. Sellink, Frits W. Vaandrage