ā04-05-2024 07:40 AM
Hi,
I have a site that recently changed their switches to Fortinet 424E-FPOE 421w, but now their 8851 KEM's are not working. My question is, what is the power needed of the 8851 with a KEM installed.
Thanks
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ā04-05-2024 09:18 AM
The two supported PoE standards for the KEM is 802.3af and 802.3at. 802.3at gives maximum power to 25.5 watts and 802.3af gives maximum of 15.4 watts. 802.3at vs 802.3af: Which PoE Standard to Use Based on that the power that your Fortinet switch gives should be with the accepted range. I haven't been able to find any specific figures for what the KEM uses in idle or active state and I don't know that by heart either. Hopefully someone else in the Community can pitch in with this.
ā04-05-2024 08:16 AM
Simple search with your favorite search engine would have given you the answer.
ā04-05-2024 08:17 AM
Additional information Cisco IP Phone 8851/61 Key Expansion Module
ā04-05-2024 08:56 AM
Rodger Thanks,
I see that the 8851 consumes 6.4w in idle state and 12.2w in active, but would happen to know the KEM's? I ask because the Fortiswitch is 421w and per port is 17.5w
ā04-05-2024 09:18 AM
The two supported PoE standards for the KEM is 802.3af and 802.3at. 802.3at gives maximum power to 25.5 watts and 802.3af gives maximum of 15.4 watts. 802.3at vs 802.3af: Which PoE Standard to Use Based on that the power that your Fortinet switch gives should be with the accepted range. I haven't been able to find any specific figures for what the KEM uses in idle or active state and I don't know that by heart either. Hopefully someone else in the Community can pitch in with this.
ā04-05-2024 09:20 AM
Thanks again!
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