Cisco VWIC3-1MFT-G703 Cisco network interface module

Brand: Cisco | Category: Accessories & Components

SKU: CSC-VWIC3-1MFT-G703 | Part #: VWIC3-1MFT-G703 | MPN: VWIC3-1MFT-G703

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The Cisco VWIC3-1MFT-G703 is a single-port voice and WAN interface card designed for integration into Cisco ISR G2 platforms in enterprise and data centre environments. Unlike modular components that require external chassis or dedicated interface processors, this VWIC3 card installs directly into available WAN interface card slots on ISR routers—a tool-less insertion that network engineers appreciate during production deployments. The card is backward compatible with existing VWIC2 slots, which matters when you're managing heterogeneous router populations across multiple sites. Installation takes minutes; there are no power connectors beyond the slot itself, no external clocking modules to configure, and no ribbon cables to route. For any network infrastructure team managing WAN connectivity across GCC and Asian data centres, this means reduced downtime during upgrades and faster troubleshooting when you need to swap cards in the field.

Cisco engineered the VWIC3-1MFT-G703 specifically for E1 (2.048 Mbps) leased-line and TDM networks that still power enterprise voice, MPLS backhaul, and legacy telecommunications infrastructure. The module supports both channelized and unchannelized E1 operation—channelized mode gives you 30 separate 64 Kbps DS0 channels for granular traffic steering, while unchannelized mode treats the full 2.048 Mbps pipe as a single circuit. This flexibility is crucial in transitioning environments where some traffic remains on circuit-switched networks while you migrate other services to IP. The ITU-T G.703 and G.704 standards compliance with CRC-4 multiframe support ensures interoperability with carrier equipment from operators across the Middle East, India, and Europe. Cisco's signaling engine handles both CAS (Channel Associated Signaling) and CCS (Common Channel Signaling) modes, so you're not locked into one telecom standard.

Physical connectivity uses a single BNC connector (75-ohm unbalanced) following the G.703 standard for E1 lines. The BNC format is standard in most telecom equipment rooms and doesn't demand exotic cabling—your existing copper runs to the provider's demarcation point typically work without modification. Clocking can be sourced internally from the router, recovered from the incoming line, or passed through to downstream equipment, which provides flexibility when you're synchronizing multiple routers or integrating with voice gateways. The card runs under Cisco IOS Software, leveraging the same CLI and configuration model your network operators already know. This eliminates retraining overhead and reduces the friction when deploying WAN cards across a multi-site rollout.

Network architects and WAN engineers select the VWIC3-1MFT-G703 when they need reliable E1 termination without the footprint or cost of dedicated CSU/DSU appliances. The card is genuine Cisco hardware eligible for TAC support validation, meaning your maintenance contracts remain unified and Cisco's technical support team has full visibility into the device configuration. Unlike third-party E1 cards, Cisco's implementation integrates seamlessly with ISR G2 platforms—no firmware incompatibilities, no quirky buffering behavior, no surprise interoperability gaps when you add voice modules or security services to the same router. In environments where uptime is measured in 9's and downtime translates directly to lost revenue, that predictability carries real weight.

Omnixon Global stocks the Cisco VWIC3-1MFT-G703 for immediate delivery across the UAE, GCC, and wider Asian markets. Whether you're deploying a new ISR platform, refreshing aging WAN cards, or building out redundant E1 paths for your data centre interconnect, our technical team understands the compatibility matrix and can validate your configuration before shipment. Request a quotation through our website or contact our enterprise solutions team directly—we maintain relationships with major carriers and telecom integrators across the region, and we're equipped to advise on module selection for your specific network topology and SLA requirements.

Interface & Connectivity Specifications

• Single E1 port operating at 2.048 Mbps per ITU-T G.703 standard with BNC 75-ohm unbalanced connector
• Supports both channelized (30 × 64 Kbps DS0) and unchannelized E1 operation with CRC-4 multiframe framing
• Dual signaling modes: CAS (Channel Associated Signaling) and CCS (Common Channel Signaling) for carrier network compatibility
• Three clocking source options—Internal, Line, and Through—enabling flexible synchronization in multi-device deployments
• Compatible with Cisco ISR G2 router series (1900, 2900, 3900) with backward compatibility for VWIC2 card slots
• Cisco IOS Software-based configuration and management using standard router CLI toolset
• Genuine Cisco hardware with TAC support eligibility and ITU-T G.703/G.704 regulatory compliance