VWIC2-1MFT-T1/E1, a Cisco Multiflex Trunk Voice WAN Interface Card. The Cisco 1 port T1/E1 multiflex interface card support generic single-port T1 or E1 trunk interfaces for voice, data, and integrated voice and/or data applications. This card provide basic structured T1 service, as well as structured and unstructured E1 services. Product Type: Voice/WAN Interface Card Technical Information Application/Usage: Voice Interfaces/Ports Interfaces/Ports: 1 x T1/E1 WAN Interfaces/Ports Details: 1 x RJ-48C T1/E1 WAN Miscellaneous Compatibility: Cisco 2600XM series, Cisco 2691, Cisco 2800 series, Cisco 3700 series, and Cisco 3800 series routers Cisco 1700 Series Modular Access Routers.