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NOTE: This product is no longer being sold and might not be supported.

View the End-of-Life Notice to learn: 

  • End-of-sale and end-of-life dates
  • What replacement products are available
  • Information about product support

Ready for an upgrade?

Cisco 4000 Series Integrated Services Routers offer greater performance and functionality. Their converged, secured branch infrastructure is built to deliver an optimal application experience on any device, any connection, from any cloud or data center. 

Why upgrade? | See the ISR 4000 Series​​​​​

Cisco 3945E Integrated Services Routerview expanded image

Enabling Borderless Networks at the Branch

The Cisco 3945E Integrated Services Router (ISR) delivers highly secure data, voice, video, and application services to large branch offices.

Cisco 3945E features include:

  • Modular Services Performance Engine (SPE) 250 for even higher performance as WAN environments evolve
  • 4 integrated 10/100/1000 Ethernet ports with 2 SFP ports
  • 4 service module slots
  • 3 Enhanced High-Speed WAN Interface Card slots
  • 3 onboard digital signal processor (DSP) slots

Power

  • Dual integrated power supplies
  • Fully integrated power distribution to modules supporting 802.3af Power over Ethernet (PoE)
  • A universal IOS image helps you deploy new IOS services quickly

Security

  • Embedded hardware-accelerated VPN encryption for secure connectivity
  • Integrated threat control using Cisco IOS Firewall, Zone-Based Firewall, IPS, and Content Filtering
  • Identity management using authentication, authorization, and accounting (AAA) and public key infrastructure

Unified Communications

  • High-density packet voice DSP module, optimized for voice and video support
  • Standards-certified VoiceXML browser services
  • Cisco Unified Border Element capabilities for up to 2500 sessions
  • Support for Cisco Unity Express voicemail, Cisco Communications Manager Express, and Survivable Remote Site Telephony

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