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.