Device Type: Modular Integrated Services Router (ISR)
Model / SKU: Cisco 2811 (CISCO2811)
Form Factor: 1 RU rack-mount (1.75 x 17.25 x 16.4 in / 44.5 x 438.2 x 416.6 mm); approx. 6.36 kg fully loaded
Integrated LAN Ports: 2x 10/100 Fast Ethernet (RJ-45)
Expansion Slots: 4x HWIC/WIC/VIC/VWIC slots; 1x Network Module (NM/NME) slot; 2x AIM (internal) slots
Default Memory: 256 MB DDR SDRAM (ECC) / 64 MB Compact Flash
Max Memory: 768 MB DDR SDRAM / 256 MB Compact Flash
Voice/Data: 2x PVDM (DSP) slots on motherboard; supports analog/digital voice, Cisco CallManager Express (CME) and SRST for up to 36 IP phones
Security: Onboard hardware VPN encryption acceleration (DES, 3DES, AES 128/192/256) with Security IOS feature set
Power Supply: Internal AC 100–240V; max 170W (without IP phone support), 210W (with IP phone support)
Operating Temperature: 0°C to 40°C (32°F to 104°F)
Key Specs: Cisco 2811 Modular ISR, 2x Fast Ethernet, 4x HWIC + 1x NM + 2x AIM Slots, 256MB DRAM / 64MB Flash (Default), Onboard VPN Encryption (DES/3DES/AES), 2x PVDM Voice Slots, Supports CME/SRST (36 IP Phones), Internal AC PSU, 1RU Rackmount
Usage: Secure data, voice, and video routing for small-to-medium businesses and enterprise branch offices; supports concurrent services (firewall, IPS, VPN) at wire-speed up to multiple T1/E1/xDSL rates. The 2 PVDM slots and voice interface card support enable integrated VoIP gateways, call processing (CME), and voicemail (Unity Express) .
