Cisco 2921 Integrated Services Router (ISR) delivers highly secure data, voice, video, and application services for small offices. Key features include:

• 3 Integrated 10/100/1000 Ethernet ports with 1 port capable of RJ-45 or SFP connectivity
• 1 service module slot
• 4 Enhanced High-Speed WAN Interface Card (EHWIC) slots
• 3 onboard digital signal processor slots
• 1 internal service module slot for application services
• Fully integrated power distribution to modules supporting 802.3af Power over Ethernet (PoE) and Cisco Enhanced PoE
• Security
  • Embedded hardware-accelerated VPN encryption
  • Secure collaborative communications with Group Encrypted Transport VPN, Dynamic Multipoint VPN, or Enhanced Easy VPN
  • Integrated threat control using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering
  • Identity management: Intelligently protecting endpoints using authentication, authorization, and accounting (AAA), and public key infrastructure
• Voice
  • High-density packet voice DSP module, optimized for voice and video support
  • Standards-certified VoiceXML browser services
  • Cisco Unified Border Element capabilities
  • Cisco Unity Express voicemail support
  • Support for Cisco Communications Manager Express and Survivable Remote Site Telephony