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VIC-4FXS/DID
Two-port Voice Interface Card - E and M
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VIC-4FXS/DID is a high-performance voice interface module designed to integrate analog telephony with modern VoIP systems. Built with four FXS ports and dedicated Direct Inward Dialing (DID) functionality, this PCIe card provides reliable analog voice connectivity while supporting key digital telephony protocols such as SIP, H.323, and MGCP, ensuring crystal clear call quality and efficient call routing in enterprise environments.
Engineered for seamless installation in servers, IP-PBXs, and VoIP gateways, the VIC-4FXS/DID offers a compact, modular form factor ideal for expanding call capacity in contact centers and enterprise telephony networks. Featuring RJ-11 connectors for its FXS ports, the card delivers robust call control and enhanced compatibility with industry-leading systems from vendors like Cisco, Avaya, and Mitel, making it the optimal choice for modern unified communications.
VIC-4FXS/DID price is $362.00, a 54.8% saving from the Cisco list price of $800.00. VIC-4FXS/DID is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for VIC-4FXS/DID for additional pricing. Browse the full Vic Vic2 Vic3 Voice Cards series or explore all Cisco products.
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| VIC-4FXS/DID |  VIC3-2E/M |  VIC2-4FXO |  VIC2-2FXO |  VIC2-2FXS | |
|---|---|---|---|---|---|
| Product Type | Voice Interface Card | Network Module | Voice Interface Card | Voice Interface Card | Voice Interface Card |
| Module Type | Telephony Module | Ethernet | WAN | N/A | FXS |
| Data Rate | N/A | 10Gbps | N/A | N/A | N/A |
| Connector Type | RJ-11 | SFP+ | RJ-11 | RJ-11 | 2 x FXS |
| Supported Protocols | SIP/H.323/MGCP | TCP/IP | Analog Telephony | SIP, SS7 | SIP, H.323, SCCP |
| Form Factor | PCIe | PCIe | Modular | 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 | 3.3V | 3.3V | 3.3V | 3.3V | N/A |
| Compatibility | Cisco / Avaya / Mitel | Cisco / Juniper / Arista / Dell / HP | Cisco | Cisco | Cisco Routers |
| Max Speed | N/A | 10Gbps | N/A | N/A | N/A |
| Supported Features | FXS connectivity, Direct Inward Dialing, Call Routing | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | FXO Signaling, Caller ID | FXO Port Supervision, DTMF Detection | Echo Cancellation, Caller ID Support, Loop Disconnect Supervision |
| Power Consumption | N/A | 15W | 5W | ≤5W | N/A |
| Interface Ports | FXS, DID | SFP+ | FXO | FXO | 2 x FXS |
| Expansion Slots | PCIe | PCIe | EHWIC | N/A | Cisco NIM |
| Product Name | VIC-4FXS/DID | VIC3-2E/M | VIC2-4FXO | VIC2-2FXO | Cisco VIC2-2FXS |
| 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 VIC-4FXS/DID card is reliable and provides exceptional performance for handling voice traffic. It's easy to install and integrates seamlessly into our network.
We've had great results with the VIC-4FXS/DID. It ensures stable and clear voice communication, even with high-volume usage.
The VIC-4FXS/DID delivers flawless performance. It manages multiple voice channels without any issues and is easy to configure.
Excellent performance with the VIC-4FXS/DID. It handles voice traffic smoothly and provides clear communication for all our users.
The VIC-4FXS/DID is an excellent choice for reliable voice communication. It integrates easily and performs consistently under load.
The Cisco VIC-4FXS/DID is a voice interface card that provides four FXS analog ports with DID support and E&M signaling, enabling seamless PSTN integration on Cisco Integrated Services Routers.
The VIC-4FXS/DID is supported on Cisco ISR 1900, 2900, and 3900 series routers with an available voice interface module slot.
It offers four FXS ports to connect analog devices such as phones, key systems, and fax machines.
The card supports loop-start, ground-start, and E&M wink and immediate signaling for flexible PSTN connectivity.
Yes, the VIC-4FXS/DID supports Direct-Inward-Dialing (DID) to route external numbers directly to specific extensions.
Yes, when paired with Cisco Unified Communications software, the VIC-4FXS/DID enables VoIP trunking over IP networks.
The card draws 4.24 W of power from the host router’s power supply, meeting standard ISR power budgets.
Power down the router, insert the VIC-4FXS/DID into a compatible voice interface slot, secure it with the retaining screw, and power the router back on.
No, the VIC-4FXS/DID must be installed or removed only when the router is powered off.
Yes, it includes G.168-compliant echo cancellation to ensure clear voice quality.
It supports flexible dial peers, translation rules, and Class of Service (CoS) configurations for granular call routing.
Yes, it supports T.38 fax relay and G.711 fax passthrough, ensuring reliable fax performance.
Official Cisco IOS images and configuration guides for the VIC-4FXS/DID are available on the Cisco Software Download portal.
It can handle up to four concurrent analog voice channels on its FXS ports.
Cisco includes a limited lifetime warranty on the VIC-4FXS/DID, covering hardware replacement under normal operation.
Verify physical cabling, check the 'show voice port summary' command in IOS for port status, and review system logs for alarm indicators.
Firmware updates are managed through Cisco IOS releases; ensure your router runs the recommended IOS version for full card support.