The Cisco 3845 Integrated Services Router provides the following support:
* Wire-speed performance for concurrent services such as security and voice, and advanced services at full T3/E3 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
* Integrated GE ports with copper and fiber support
* Optional Layer 2 switching support with Power over Ethernet (PoE) (as an option) , supports the 36-port Cisco EtherSwitch module (NMD-36ESW)
* Security
o On-board encryption
o Support of up to 2500 VPN tunnels with the AIM-HPII-PLUS Module
o Antivirus defense support through Network Admission Control (NAC)
o Intrusion Prevention as well as stateful Cisco IOS Firewall support and many more essential security features
* Voice
o Analog and digital voice call support
o Optional voice mail support
o Optional support for Cisco CallManager Express for local call processing in stand alone business for up to 240 IP Phones
o Optional support for Survivable Remote Site Telephony support for local call processing in small enterprise branch offices for up to 720 IP phones
- See more at: http://network-guarantee.co.uk/network/products-page/cisco-router/cisco-3800-series/cisco-routers-cisco3845/#sthash.fvkNBMB9.dpuf