The IAB has revised its draft document on “Guidelines for Acting as an IETF Liaison to Another Organization.”
Whenever IETF decides to enter into a liaison relationhsip with
another organization, e.g. a Standards Development Organization, a
consortium, or an industrial forum, a liaison manger is appointed.
The procedures used by the IAB to establish and maintain liaison
relationships between the IETF and other organizations are described
in RFC 4052 [RFC4052]. This document give guidelines on
expectations, tasks, responsibilities and mandate of the liaisons
managers.
http://www.ietf.org/internet-drafts/draft-iab-liaison-guidelines-00.txt