The cisco third generation 1 port t1e1 multiflex trunk voicewan interface mft vwic3s support data and voice applications the cisco mft vwic3 combines wan interface card wic and voice interface card vic functions to provide unparalleled flexibility versatility and investment protection through its many uses customers who choose to integrate data and voice in multiple steps preserve their investment in a t1e1 wan interface because the cisco mft vwic3 cards can be reused in packet voic