Cisco 2911 Integrated Services Router PBX

Cisco 2911 Integrated Services Router PBX. The Cisco 2911 Integrated Services Router (ISR) is a modular router featuring embedded hardware encryption, voice and video capable digital signal processor (DSP) slots, optional firewall, intrusion prevention, call processing,and application services. The chassis offers a single Internal Services Module (ISM) slot, 4 eHWIC slots, 3 10/100/1000 WAN ports, 2 GE DSP slots, 256MB of Flash memory, and 512MB of DRAM in a 2U form factor.