2821 ISR

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2821 The Cisco 2821 Integrated Services Router provides the following support:The Cisco 2821 Integrated Services Router is part of the Cisco 2800 Integrated Services Router Series which complements the Integrated Services Router Portfolio.

Wire-speed performance for concurrent services such as security and voice , and advanced services to multiple T1/E1/xDSL WAN rates
Enhanced investment protection through increased performance and modularity
Enhanced investment protection through increased modularity
Increased density through High-Speed WAN Interface Card Slots (four)
Enhanced Network Module Slot
Support for over 90 existing and new modules
Support for majority of existing AIMs, NMs, WICs, VWICs, and VICs
Two Integrated 10/100/1000 Ethernet ports
Optional Layer 2 switching support with Power over Ethernet (PoE) (as an option)
Security
- On-board encryption
- Support of up to 1500 VPN tunnels with the AIM-EPII-PLUS Module
- Antivirus defense support through Network Admission Control (NAC)
- Intrusion Prevention as well as stateful Cisco IOS Firewall support and many more essential security features
Voice
- Analog and digital voice call support
- Dedicated Extension Voice Module slot
- Optional voice mail support
- Optional support for Cisco CallManager Express (Cisco CME) for local call processing in stand alone business for up to48 IP Phones
- Optional support for Survivable Remote Site Telephony support for local call processing in small enterprise branch offices for up to 48 IP phones