VWIC3-4MFT-T1/E1 Cisco T1/E1 Multiflex Trunk Interface Card

Cisco VWIC3-4MFT-T1/E1 - Quad-Port Multiflex Voice/WAN Interface Card

The Cisco VWIC3-4MFT-T1/E1 is a high-density multiflex voice/WAN interface card that provides four configurable ports supporting T1 or E1 connectivity. Designed for Cisco ISR G2 and ISR 4000 Series routers, it enables enterprises to consolidate voice, data, and WAN services on a single platform. This module is ideal for organizations requiring scalable digital voice trunking and channelized WAN services.

🔧 Key Specifications

• Device Type: Multiflex Voice/WAN Interface Card
• Ports: 4 (configurable for T1 or E1)
• Supported Interfaces: Channelized T1/E1, ISDN PRI, and data WAN services
• Compatibility: Cisco ISR G2 (1900, 2900, 3900) and ISR 4000 Series routers
• Voice Support: Integrated voice and data over T1/E1 circuits
• Data Support: Frame Relay, PPP, HDLC, and channelized data services
• PRI Support: ISDN PRI trunking for PBX and PSTN integration
• Scalability: Multiple VWIC3 modules can be installed for higher density
• Form Factor: Internal router expansion slot
• Standards Compliance: FCC Class B, UL certified

🧩 Ideal Use Cases

• Enterprises requiring multiple T1/E1 connections for voice and WAN services
• Deployments needing ISDN PRI trunking for PBX integration
• Channelized data services over multiple T1/E1 circuits
• Hybrid environments consolidating voice and data on Cisco ISR platforms

⚙️ Licensing & Expansion
The VWIC3-4MFT-T1/E1 operates as a plug-in module for supported Cisco ISR platforms. No additional licensing is required beyond standard Cisco IOS support. Expansion is achieved by adding multiple VWIC3 modules to increase port density and service flexibility.