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
 CISCO 19 Rack Mount Kit for 2821 2851 ACS 2821 51RM 19  US $22.95 |  AIM VPN EPII PLUS Cisco VPN Enhanced Performance Module US $44.00 |  Cisco NM 4A S Interface Module 1YearWarnty 10XAvailable US $65.00 |
 Cisco NM HD 2V Network Module 1YearWarranty 5XAvailable US $119.00 |  Open Box CISCO VWIC2 2MFT T1 E1 Genuine w Hologram US $800.00 |  Cisco VWIC 2MFT T1 1841 2801 2811 2821 2 port T1 Card US $499.00 |
 NEW Genuine Cisco HWIC 1GE SFP High Speed WAN Card US $1,250.00 |  CISCO T1 1841 2801 2811 2821 T1 Card US $99.00 |  NEW Cisco Original CISCO2801 1 Year War 2801 2811 2821 US $970.00 |
 NEW Cisco Original CISCO2811 1 Year War 2801 2811 2821 US $1,198.00 |  NEW Cisco Original WIC 1DSU T1 V2 Cisco2801 2821 2851 US $290.00 |  NEW Cisco Original NM HD 2V 2821 2851 Interface Card US $450.00 |
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