Services-Rich Router for Medium-to-Large Branches

Cisco 3900 Series Integrated Services Routers (ISR) are designed to meet the application demands of today's medium-to-large branches and to evolve to cloud-based services. They deliver virtualized applications and highly secure collaboration through the widest array of WAN connectivity at high performance that offers concurrent services at up to 375 Mbps.

Video Data Sheet

Cisco 3900 Series ISRs provide agility and flexibility for collaboration. (4:31 min)

Compare with Cisco 4000 Series

Our newer ISRs provide up to 10 times the performance of earlier generations.

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Features and Capabilities

All Cisco 3900 Series Integrated Services Routers (ISR) have modular design that allows for reuse of a broad array of existing modules that meet business requirements while maximizing investment protection.They offer:

Agile Application Services, including the ability to host multiple Cisco or third-party applications on UCS-E Series server modules that can also run VMware ESXi for mission-critical applications at the branch office, along with application delivery assurance services to support granular application visibility and control (AVC) that can prioritize and optimize all types of data, voice, and video applications
WAN Connectivity through the industry's widest choices, including T1/E1, T3/E3, 4G/LTE, xDSL, copper, and fiber Gigabit Ethernet
WAN Optimizationwith support for router-integrated, on-demand WAN optimization and application acceleration through service modules
Highly Integrated Security with a comprehensive suite of VPN technology with IPSec and SSL VPNs enhanced by onboard encryption acceleration and threat defense support through firewall and intrusion prevention system (IPS) options and further includes support for next-generation encryption and cloud-based security
Unified Communications that support call processing and voicemail services and offer a high-quality analog and digital voice and video experience through on-board integrated digital signal processors (DSPs) and analog voice cards that support highly resilient call management that can overcome WAN service interruptions
Medianet services that deliver a more visual, social, and personal experience through video networking solutions for branch users and allow for control of media services through AVC
High Performance with powerful and energy efficient multicore processors, a multigigabit fabric and high-performance services modules that can run multiple concurrent services offered in a scalable manner at high throughputs.

Specifications at a Glance

The Cisco 3900 Series Integrated Services Routers include:

3 RU units with up to 4 GE ports with 2 SFP ports
UCS-E service module that can support Cisco and third-party apps, VMware ESXi, and MS hypervisor
Up to 4 service modules, 1 integrated service module (ISM)
Up to 98 LAN switch ports, 4 Enhanced High-Speed WAN Interface Card (EHWIC) slots
Ability to add a second integrated power supply
Security
- Embedded hardware-accelerated VPN encryption and Cisco Cloud Web Security
- Integrated threat control using Cisco IOS Firewall and Cisco IOS IPS
Unified Communications
- 3 or 4 on-board digital-signal-processor (DSP) slots optimized for voice and video
- Cisco Unified Border Element capabilities for up to 2500 sessions
- Support for Cisco Unified Communications Manager Express, Cisco Unified Survivable Remote Site Telephony, and Cisco Unified Enhanced Survivable Remote Site Telephony (E-SRST)

Compare Routers Before You Purchase or Upgrade

Before you buy, compare this series with our newer 4000 Series ISRs, which provide network, compute, and built-in WAN services at up to 10 times the performance of previous-generation ISRs.

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