Cisco 4-Port Clear Channel T1/E1 HWICThe Cisco 4 Port Clear Channel T1 E1 High Speed WAN Interface Card (HWIC) is designed for organizations that demand reliable, scalable, and cost efficient wide area network connectivity. This enterprise grade HWIC slides into supported Cisco routers, delivering up to four dedicated T1 E1 channels in a compact form factor. It is purpose built to minimize deployment complexity, reduce management overhead, and maximize productivity across branch offices,