Description
The Cisco VIC3-4FXS/DID is a versatile Voice Interface Card designed for Cisco ISR routers, offering four ports that support both Foreign Exchange Station (FXS) and Direct Inward Dialing (DID) functionalities. Ideal for small to medium-sized businesses, this module enables analog voice connectivity for legacy phone systems, fax machines, and key systems within a VoIP environment. Its compact, modular design allows for easy integration into compatible Cisco routers, such as the 2800, 2900, and 3900 series. The card supports high-performance voice applications and is T.38 fax relay capable, ensuring reliable analog-to-digital communication.
This used Cisco VIC3-4FXS/DID card features RJ-11 connectors for each port and supports signaling protocols such as loop-start, ground-start, and DID. It uses DSP (Digital Signal Processing) resources from the host router, optimizing call quality and reducing latency. The card is hot-swappable and designed for high availability, making it a dependable solution for hybrid telephony environments. With its robust build and proven performance, it remains a cost-effective choice for extending analog voice services within IP-based networks.