The Cisco VIC3-2FXS/DID is a high-performance voice interface card designed for Cisco ISR routers, offering two FXS ports and Direct Inward Dialing (DID) support—ideal for integrating analog devices into VoIP networks in refurbished or legacy system environments.

The Cisco VIC2-2BRI-NT/TE is a dual-port ISDN BRI voice interface card designed for modular Cisco routers, offering flexible network connectivity with NT and TE mode support—ideal for expanding voice capabilities in legacy or hybrid environments.

The Cisco VG320 is a high-density analog voice gateway designed for seamless integration into IP telephony environments, offering 48 FXS ports, robust call control support, and reliability ideal for businesses seeking cost-effective, used voice infrastructure solutions.