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VWIC3-4MFT-T1/E1
Cisco Voice/WAN Card VWIC3-4MFT-T1/E1
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VWIC3-4MFT-T1/E1 is a WAN interface module designed for integration with Cisco routers, providing robust support for legacy T1/E1 digital circuits and voice connectivity in modern network infrastructures. It delivers four dedicated T1/E1 ports with multi-frame transmission capabilities that facilitate seamless data and voice communication over standard T1/E1 lines.
The module features a modular form factor that fits into dedicated router slots and is engineered for reliable performance in data centers and branch offices. With support for T1/E1 protocols and multi-frame processing, the VWIC3-4MFT-T1/E1 is ideally suited for network environments seeking to upgrade legacy voice and data circuits while ensuring optimal compatibility and efficient utilization of existing telephony infrastructure.
VWIC3-4MFT-T1/E1 price is $996.00, a 80.3% saving from the Cisco list price of $5,060.00. VWIC3-4MFT-T1/E1 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for VWIC3-4MFT-T1/E1 for additional pricing. Browse the full Router Vwic2 Vwic3 Cards series or explore all Cisco products.
In a multi-branch enterprise migrating legacy PBX systems to Cisco Unified Communications Manager, the VWIC3-4MFT-T1/E1 installed in Cisco ISR routers provides four channelized T1/E1 interfaces for direct PSTN connectivity. This configuration enables seamless VoIP call routing at each site, reduces telephony operational costs by up to 30%, and centralizes voice management for consistent quality and simplified administration.
For financial institutions demanding 99.999% uptime, deploying dual VWIC3-4MFT-T1/E1 cards in active/standby Cisco ISR routers delivers redundant T1/E1 voice paths. Automatic failover ensures uninterrupted PSTN service during WAN or network failures, minimizing call drops, enhancing business continuity, and meeting stringent SLA requirements.
A growing contact center leverages VWIC3-4MFT-T1/E1 modules in Cisco ASR 1000 Series routers to provision up to 96 simultaneous PSTN voice channels across four T1 trunks. This high-density voice solution supports rapid call volume growth, optimizes rack space utilization, and streamlines capacity planning for efficient operations.
To get the detailed certification, please go to the Compliance Center.
| VWIC3-4MFT-T1/E1 |  VWIC3-1MFT-T1/E1 |  VWIC-2MFT-T1-DIR |  VWIC-2T1/E1-RAN |  VWIC3-2MFT-G703 | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | WAN Module | WAN Module | WAN Module | Voice WAN Interface Card |
| Module Type | WAN | T1/E1 WAN Module | T1 Interface Card | T1/E1 WAN | WAN |
| Data Rate | T1/E1 (1.544 Mbps / 2.048 Mbps) | 1.544Mbps (T1) / 2.048Mbps (E1) | 1.544 Mbps | T1: 1.544 Mbps / E1: 2.048 Mbps | 1.544Mbps/2.048Mbps |
| Connector Type | T1/E1 Interface | RJ-48 | T1 Coaxial Connector | RJ-48 | Modular G.703 Connector |
| Supported Protocols | T1/E1 Framing and Signaling | T1/E1 | TDM / T1 PRI / CAS | TDM | G.703 |
| Form Factor | Modular | Modular | Modular (VWIC) | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | N/A | N/A | 3.3V | N/A | N/A |
| Compatibility | Cisco Routers | Cisco Integrated Services Routers | Cisco Routers | Cisco Routers | Cisco Routers |
| Max Speed | T1/E1 speeds | 1.544Mbps (T1) / 2.048Mbps (E1) | 1.544 Mbps per channel | N/A | 1.544Mbps/2.048Mbps |
| Supported Features | Multi-Frame Transmission, Voice and Data Integration, Digital Signal Processing | T1/E1 Framing, Clock Recovery, Signaling (CAS, FDM) | Digital signal conversion, voice and data integration | Dual T1/E1 interfaces; Channelized operation | G.703 framing, DS0 mapping |
| Power Consumption | N/A | N/A | N/A | N/A | N/A |
| Interface Ports | 4 x T1/E1 Ports | T1/E1 | T1 | T1/E1 | G.703 |
| Expansion Slots | VWIC Slot | VWIC Slot | VWIC | NIM | VWIC Slot |
| Product Name | VWIC3-4MFT-T1/E1 | VWIC3-1MFT-T1/E1 | VWIC-2MFT-T1-DIR | VWIC-2T1/E1-RAN | VWIC3-2MFT-G703 |
| Height | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Weight | N/A | N/A | N/A | N/A | N/A |
The VWIC3-4MFT-T1/E1 is a high-performance module. It supports our network's growth, providing stable connections and excellent data transfer speed.
The VWIC3-4MFT-T1/E1 integrates seamlessly into our infrastructure. It delivers fast and reliable performance for all connected devices.
We rely on the VWIC3-4MFT-T1/E1 for its excellent stability and high-speed data handling. It supports our network's demanding needs.
The VWIC3-4MFT-T1/E1 offers fantastic value. It provides reliable, high-speed connectivity and ensures seamless data transfer across our network.
The VWIC3-4MFT-T1/E1 module is easy to deploy and offers fast, stable performance. It provides exceptional value for high-traffic networks.
The Cisco VWIC3-4MFT-T1/E1 is a four-port Multi-Flex T1/E1 voice and WAN interface card designed for use in Cisco Integrated Services Routers (ISRs).
The VWIC3-4MFT-T1/E1 is supported on Cisco ISR 4000, 3900, 2900, 2800, 1800, and 1900 series routers running compatible IOS releases.
The VWIC3-4MFT-T1/E1 provides four independent Multi-Flex ports that can be configured as T1 or E1 interfaces.
Yes, each of the four Multi-Flex ports on the VWIC3-4MFT-T1/E1 card can be individually configured for T1 (1.544 Mbps) or E1 (2.048 Mbps) operation.
The VWIC3-4MFT-T1/E1 uses RJ-48C connectors for T1 and RJ-45 connectors for G.703 E1 signaling with standard Cisco T1/E1 patch cables.
Power down the router, slide the VWIC3-4MFT-T1/E1 into an available WIC slot until it clicks, secure the faceplate, then power on the router.
The VWIC3-4MFT-T1/E1 requires Cisco IOS 12.4(15)T or later on ISR 2900/3900 and IOS XE 16.x or later on ISR 4000 series.
Enter global configuration mode, specify the serial interface (for example, interface Serial0/0/0:15), set framing and line code (e.g. framing esf, linecode ami), then apply clock source.
Yes, the VWIC3-4MFT-T1/E1 supports channelized T1/E1, allowing per-timeslot configuration for voice (DS0) or data on each port.
Each T1 interface delivers up to 1.544 Mbps and each E1 interface delivers up to 2.048 Mbps, with aggregate bandwidth of up to 8×1.544 Mbps or 8×2.048 Mbps.
The card consumes approximately 5 W, operates at 0–45 °C ambient temperature, and supports up to 85% non-condensing relative humidity.
Cisco provides a limited lifetime warranty with 90 days of software updates; extended support and hardware replacement are available via Cisco SMARTnet contracts.
You can purchase authentic VWIC3-4MFT-T1/E1 cards through Cisco authorized resellers, Cisco’s online store, or certified distribution partners.
Yes, by configuring channelized timeslots you can carry both voice (DS0 circuits) and data over the same T1/E1 physical interfaces.
By providing dedicated T1/E1 channels with hardware-based clocking and jitter buffering, the VWIC3-4MFT-T1/E1 minimizes latency and packet loss for superior voice quality.
Use ‘show controllers serial’ to verify clock source and framing, ensure correct cabling, check IOS debug logs for ‘hdlc’ or ‘g703’ errors, and confirm CSU/DSU status.
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