The Cisco Second-generation T1/E1 Multiflex Trunk Voice/WAN Interface (MFT VWIC2) supports data & voice applications on the Cisco 1721 (data only), 1751 & 1760 Modular Access Routers, the Cisco 2600XM Multiservice Router, the Cisco 2691 Multiservice Platform, the Cisco 3662 Telco Versatile DCN Access Platform, the Cisco 3725 & 3745 Multiservice Routers, & the Cisco 1841 (data only), 2801, 2811, 2821, 2851, 3825, & 3845 Integrated Services Routers. The Cisco MFT VWIC2 combines WAN-interface-card (WIC) & voice-interface-card (VIC) functions to provide unparalleled flexibility, versatility, & investment protection through its many uses. Customers who choose to integrate data & voice in multiple steps preserve their investment in a T1/E1 WAN interface because the Cisco MFT VWIC2 cards can be reused in packet voice applications.