deleting some CCs....Henning Schultzerinne had a very long one which I'm unable to locate just now - it might never have made it out of the IAB review cycle, or my I-D archive may be incomplete.It never made it out I have 2 pdf files draft-schulzrinne-iptel-arch-00.pdf and draft-schulzrinne-iptel-challenges-00.pdf which were about as far as the work got. If someone wants to review this work for the effort here I'm happy to send them a copy