Cisco Systems VIC3-4FXS/DID - 4 Port Voice Interface Card FXS and Did

The Cisco IP Communications 4-Port FXS/DID Voice/Fax Interface Card provide enterprises managed service providers and service providers the ability to directly connect the public switched telephone network (PSTN) and traditional telephony equipment (private branch exchange [PBX] key system analog telephones fax machines etc.) to Cisco 2800 2900 3800 and 3900 Series Unified Communications routers. This Cisco IP Communications voice/fax network module delivers the most versatile combination of analog and digital voice and data capabilities in a single network module.