ations in multiple transport protocol environmentsUS20010032232 *Dec 20, 2000Oct 18, 2001Zombek James M.Messaging method and apparatus including a protocol stack that corresponds substantially to an open system interconnection (OSI) model and incorporates a simple network transport layerUS20020098840 *Feb 21, 2002Jul 25, 2002Hanson Aaron D.Method and apparatus for providing mobile and other interm