The Second-generation 1- & 2-port G.703 Multiflex Trunk voice/WAN Interface Cards support not only unstructured E1 but also all the features of the other Cisco MFT VWIC2 cards, including drop & insert. Additional flexibility is provided on the 2 port G.703 Multiflex Trunk voice/WAN Interface Cards with the capability to configure one port for unstructured E1 while configuring the other for standard framed E1.