The Cisco 3900 Series Integrated Services Routers build on 25 years of Cisco innovation and product leadership. The new platform is built to support the next phase of branch evolution, delivering rich media collaboration and virtualization to branches while maximizing operational cost savings. The new second-generation integrated services routers support new high-capacity digital signal processors (DSPs) for future video enhancements, while featuring further improved availability with high-power service modules, multi-core CPUs, Gigabit Ethernet switching with Power over Ethernet (PoE), and new energy monitoring and control capabilities that can simultaneously improve overall system performance. Additionally, through the new Cisco IOS® software universal image and service-ready engine modules, hardware and software deployment can be decoupled, providing a flexible technology foundation that can quickly meet evolving network needs. Overall, through intelligent integration of market-leading security, unified communications, wireless, and application services, the Cisco 3900 Series delivers unmatched total cost of ownership savings and network flexibility.
The Cisco 3900 Series Integrated Services Router is a next‑generation platform designed for branch offices, offering voice, video, security, mobility, and data services in a modular, scalable architecture. It supports a wide range of interfaces—including T1/E1, T3/E3, xDSL, copper, and fiber—plus enhanced Power over Ethernet (PoE) and ePoE capabilities.
The series includes the Cisco 3925 and Cisco 3945 models, each featuring high‑performance multicore CPUs, DSP slots, EHWIC slots, and optional power redundancy. The routers run Cisco IOS software (version 15.0(T)M and later) and provide extensive security, wireless, and application services through integrated modules and the Service Ready Engine (SRE). This manual is written in Chinese.
| Maximum Throughput | Cisco 3945 – 150 Mbps; Cisco 3925 – 100 Mbps |
|---|---|
| Ethernet Ports | Three 10/100/1000 Mbps Ethernet ports |
| EHWIC Slots | Four integrated EHWIC slots |
| DSP Slots | Four DSP slots |
| Memory | 256 MB CompactFlash, 1 GB DRAM |
| Flash Slots | Two external flash slots, up to 4 GB each |
The Cisco 3900 series improves service integration for voice, video, security, mobility, and data, delivering higher performance and lower total cost of ownership.
The router includes four integrated EHWIC slots for flexible connectivity options.
Cisco IOS software version 15.0(T)M (and later 15M and T) supports the 3900 series.