Cisco 4221 ISR Security Router - ISR4221-SEC/K9 Nexus Button Module Expansion: Supports up

Button Module Expansion: Supports up to 3 Yealink EXP50 expansion modules

Cisco Unified IP phones provide exceptional levels of integrated business functionality and converged communications features

firewall and VPN functionality

To add extra functionality

Cisco 4221 ISR Security Router - ISR4221-SEC/K9 Nexus Button Module Expansion: Supports upNew and Refurbished 4221 ISR with Advanced Features Cisco 4221 ISR is available with 3 onboard GE, 2 NIM slots, 1 ISC slot, 1 SM slot, and 4 GB flash memory default, along with 4 GB DRAM default and Warranty Security IOS. The Cisco 4000 Series Integrated Services Routers (ISR) The Cisco 4000 Series ISR revolutionizes WAN communications in the enterprise branch. With new levels of built in intelligent network capabilities and convergence, the routers