Description
The Cisco C3945-VSEC/K9 is a high-performance Integrated Services Router (ISR) designed for medium to large enterprise branch offices requiring robust voice, video, and security capabilities. Built on the modular Cisco 3900 Series platform, it features a durable chassis with four integrated 10/100/1000 Ethernet ports, three onboard digital signal processor (DSP) slots, and support for up to four enhanced service module (SM) slots. This model includes the Voice Security Bundle, which adds advanced voice features and comprehensive threat defense, making it ideal for unified communications deployments. Its modular architecture ensures flexibility and investment protection as network demands evolve.
Powered by a multi-core processor and supporting up to 4 GB of DRAM and 256 MB of flash memory, the C3945-VSEC/K9 delivers reliable throughput and performance for demanding applications. It supports a wide range of WAN connectivity options, including T1/E1, serial, and Ethernet interfaces, and is compatible with Cisco IOS Software for advanced routing and security features. Common components found in used units may include PVDM3 DSP modules, interface cards (HWICs, EHWICs), and power supplies with optional redundant configurations. Ideal for businesses upgrading their infrastructure, this router offers enterprise-grade functionality at a fraction of the cost when purchased refurbished.