Cisco VWIC3-4MFT-T1/E1

The Cisco VWIC3-4MFT-T1/E1 is a 3rd-generation 4-port T1/E1 Multiflex Trunk Voice/WAN Interface Card. • Ports: 4 x T1/E1 network WAN / voice ports • Module Type: Combined WIC (WAN Interface Card) and VIC (Voice Interface Card) • Integrated CSU/DSU: Built-in channel service unit/data service unit multiplexing capabilities, eliminating external third-party hardware • Clocking: Independent clocking support for data and voice applications per port • Compatibility: Supported on Cisco Integrated Services Routers (ISR) including the Cisco 1921, 1941, 2901, 2911, 2921, 2951, 3925, 3945, 3925e, and 3945e series