Cisco VWIC2-1MFT-T1/E1 connects to PBX, PSTN, or WAN using T1/E1 standard interface and provide channel drop-and-insert capability. Supports T1, fractional T1, E1 (including structured G.703 with G.704 framing), fractional E1, and E1structured G.703 applications. Integrates a fully managed DSU/CSU for T1 deployments and a fully managed DSU for E1 deployments. Simultaneous support for both data and voice. Dedicated echo-cancellation option; Drop-and-insert capability; Enhanced clocking capabilities.