Cisco VWIC3-4MFT-T1E1 4x Ports T1E1 Multi-flex Module
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General Information
Interfaces/Ports
Technical Information
Miscellaneous
Storage Capacity
The Cisco VWIC3-4MFT-T1/E1 is a versatile, hot-pluggable interface card that combines WAN Interface Card (WIC) and Voice Interface Card (VIC) capabilities into a single module. It supports four T1 or E1 ports with integrated DSU/CSU and built-in drop-and-insert multiplexing, enabling simultaneous support for voice, voice over packet, and WAN data services—facilitating seamless migration from legacy voice infrastructure to IP-based solutions. Each port can be independently clocked for data applications, with voice ports clocked from a single source, and the module supports fractional channel configuration with up to two channel groups per port. Compatible with Cisco 1921, 1941(W), 2901, 2911, 2921, 2951, 3925, and 3945-series Integrated Services Routers, it integrates legacy TDM services efficiently within converged routing platforms.