1142n Access Point Power

Mat.Edwards_2 · ‎01-06-2010

Does anyone know why 1250 AP's have to use 802.3at to power both radios but 1142n AP's can use standard 802.3af without comprimise?

John Cook · ‎01-06-2010

My understanding is that the 1250s (being modular) have additional PCI circuitry that requires more power. I don't remember where i read that, but it seemed to make sense at the time. -John

Stephen Rodriguez · ‎01-06-2010

That is correct, if you look at the older ask the expert sessions, find the one with Fred Niehaus, and he explains why the

1250 requires more power.

HTH,
Steve

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Leo Laohoo · ‎01-06-2010

Hi Mat,

Please don't compare apple with oranges. The 1140 and the 1250 were designed differently (other than looks and weight). Like it's predecessors, the 1250 was designed for wide-open spaces deployment hence the transmission footprint is significantly wider. The 1140 is designed for office space use hence you don't need a very strong transmitter.

If you upgrade the 1250s IOS to 12.4(10b)JDA3 you should be able to power the 1250, with both radios, on 15.4w but at a cost of lower MCS rates.

Hope this helps.