He is active in [[ETSI]], [[TIPHON]], and the [[IETF]], and has authored several [[RFC]]s.<ref>[http://www.faqs.org/rfcs/rfc4355.html faqs]</ref><ref>[http://www.faqs.org/rfcs/rfc4759.html faqs]</ref> | He is active in [[ETSI]], [[TIPHON]], and the [[IETF]], and has authored several [[RFC]]s.<ref>[http://www.faqs.org/rfcs/rfc4355.html faqs]</ref><ref>[http://www.faqs.org/rfcs/rfc4759.html faqs]</ref> |