The Cisco 3900 series Integrated Services Routers offer embedded hardware encryption acceleration, voice- and video-capable digital signal processor (DSP) slots, intrusion prevention, call processing, voicemail, and application services. In addition, the platforms support the industries widest range of wired and wireless connectivity options such as T1/E1, T3/E3, xDSL, Copper and Fiber GE. The Cisco 3925 Voice Bundle offers superior performance and flexibility for flexible network deployments from small business offices to large enterprise office, all while providing industry-leading investment protection.