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[802.3af] Seeing the wrong signature

Hi Steven

you may be right about this, the issue was ISDN Stubs that could fool the
PSE into seeing the wrong signature... that is why i brought us the Leonowich
hazard matrix.. or something along these lines...


At 10:26 AM 1/9/02 +1100, you wrote:
>"R karam" <rkaram@xxxxxxxxx> wrote:
>> I am worried that this is a 'major' change we have 'messed' 
>> with this so many times that at this stage of the game, 
>> this would require revisiting the details all over...
>With 45k impedance, If 3 PSE's were connected together -
>(with misconfigured wiring, one at each end, and one midspan - ?)
>would it not be possible for one PSE to see the sense 
>impedance of the other two PSE's as the correct detection 
>resistance?  That is, 45k/2 = 22.5k - in some situations,
>for instance the other two PSE's being powered off, will
>the third PSE not then try and erroneously power the circuit?