Used Cisco 2851 Integrated Services Router

The Cisco 2851 Integrated Services Router provides the following support: 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; and optional Layer 2 switching support with Power over Ethernet (PoE) (as an option) , supports the 36-port Cisco EtherSwitch module (NMD-36ESW).

The Cisco 2800 Series delivers multiple high-quality simultaneous services at wire speed up to multiple T1/E1/xDSL connections. The routers offer embedded encryption acceleration and on the motherboard voice digital-signal-processor (DSP) slots; intrusion prevention system (IPS) and firewall functions; optional integrated call processing and voice mail support; high-density interfaces for a wide range of connectivity requirements; and sufficient performance and slot density for future network expansion requirements and advanced applications.
 

Product Description: 64-256 Flash Memory, 256-1000 DRAM Memory, Two 10/100/1000BaseT, Three PVDM, One Network Module Slot, Four HWIC Slots, Two AIM Slots