Cisco VWIC-1MFT-E1 is a single-port Multiflex Trunk Voice/WAN Interface Card designed for Cisco modular routers. It provides a flexible E1 (2.048 Mbps) interface that can operate as either a WAN data interface or a voice trunk interface, depending on the router platform and configuration. The module supports integrated voice and data services, making it suitable for legacy enterprise WAN connectivity, ISDN/PSTN integration, and voice gateway applications.
Key Features
- 1-port E1 Multiflex Trunk interface
- RJ-48 connector
- Supports both WAN data and voice applications
- Compatible with fractional and full E1 (2.048 Mbps)
- Flexible use as WIC or VIC depending on platform
- Supports drop-and-insert voice/data multiplexing
- Hardware-based DSU/CSU functionality (platform dependent)
- Cisco IOS integration for routing and voice services
- Hot-installable in supported Cisco routers
- Ideal for legacy telecom and enterprise WAN environments
Technical Specifications
Model: VWIC-1MFT-E1
Manufacturer: Cisco Systems
Product Type: Voice / WAN Interface Card (Multiflex Trunk)
Interface Type:
- E1 (G.703 / G.704 compliant)
Port:
- 1 × RJ-48 E1 port
Data Rate:
- 2.048 Mbps (E1)
- Fractional E1 support (Nx64 kbps)
Line Encoding:
- HDB3
Framing:
- CRC4 / Non-CRC4 (config dependent)
Supported Modes:
- WAN data mode (WIC functionality)
- Voice trunk mode (VIC functionality)
- Fractional E1 and full E1
- Channelized and unchannelized operation
Protocols Supported:
- HDLC
- PPP
- Frame Relay
- ISDN PRI (platform dependent)
- Drop-and-insert multiplexing
Connector Type:
- RJ-48
Standards:
- ITU-T G.703 / G.704
- ETSI E1 standards
Form Factor:
- WAN Interface Card (WIC/VWIC)