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Cisco 2800 Series ISRs – 2801, 2811, 2821, 2851 Features

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The Cisco 2800 series of Integrated Services router platforms are one of my favorites due to their flexibility in accommodating a host of new and legacy modules.  This makes them very highly configurable to suit the needs of any large or small voice and/or data deployment.

The following is a Cisco Systems Video fact sheet about this series of routers.   

Cisco 2800 Series Integrated Services Routers

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Watch the video above to learn about the different models in the 2800 Series routers to select the right one for your business. (3:58 min)

Models Comparison
Model Onboard
DSP Slots
LAN Ports
Optional Power
over Ethernet
Slots for
Slots for
2801 2 2 FE 120W 2 HWIC/VWIC/WIC/VIC
1 VWIC/VIC (voice only)
0 1 RU
2811 2 2 FE 160W 4 HWIC 1 NME 1 RU
2821 3 2 GE
240W 4 HWIC 1 NME or
2 RU
2851 3 2 GE
360W 4 HWIC 1 NME,
NME-X or
2 RU

In the comments below let me know what sort of further detail you are looking for in regards to this series of routers and I will try to see if I can update this post with it. Thanks.

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About Behzad Munir

Behzad Munir, P.Eng, is a Voice Solutions Consultant working in Toronto, Canada

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