Primary features include:

• 3 integrated 10/100/1000 Ethernet ports with 1 port capable of RJ-45 or SFP connectivity
• 2 service module slots
• 4 Enhanced High-Speed WAN Interface Card slots
• 3 onboard digital signal processor (DSP) 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

• Onboard hardware acceleration for 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 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