A system to allow external applications to interact with an operating VXML browser include a VXML browser operating on a processor having a VXML interpreter. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The first curable resin composition includes at least one aromatic epoxy resin in combination with a solvent, a functionalized colloidal silica dispersion, and at least one other component selected from the group consisting of cycloaliphatic epoxy monomers, aliphatic epoxy monomers, hydroxy aromatic compounds and combinations and mixtures thereof, thereby forming a solvent-modified resin.