The Cisco 3925 Integrated Services Router (ISR) delivers highly secure data, voice, video, and application services to small branch offices. Key features include: – Modular Services Performance Engine (SPE) 100, which can be upgraded for even higher performance as next-generation WAN environments evolve – 3 integrated 10/100/1000 Ethernet ports with 2 ports capable of RJ-45 or SFP connectivity – 2 service module slots – 4 Enhanced High-Speed WAN Interface Card (EHWIC) slots – 4 onboard digital signal processor (DSP) slots – 1 Internal Services Module slot – Dual integrated power supplies – Fully integrated power distribution to modules supporting 802.3af Power over Ethernet – A universal IOS image that lets you deploy new IOS services quickly Security – Embedded hardware-accelerated VPN encryption for secure collaboration – 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 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 800 sessions – Cisco Unity Express voicemail support – Support for Cisco Communications Manager Express and Survivable Remote Site Telephony