The WIC-1B-U-V2 replaces WIC-1B-U card and offers single port ISDN WIC with integrated NT-1 that is currently supported on the Cisco 1600, 1700, 2600, 3600 and 3700 Series product families. The ability to add BRI connectivity via a WIC allows administrators to maximize valuable slot space while providing additional connectivity options, such as Ethernet, on the same module.