As I understand the gist of the comments, the document in question was driven by the observation that folks were having trobule achieving interoperability. Trying to fix that is clearly sensible and very much in the IETF and working group interest. Have you looked at things like the SIP torture tests? Those are codifications of specific messages to specific entities that tended to break implementations. It is much easier to define those than actual test suites. Yours, Joel _______________________________________________ IETF mailing list IETF@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf