We have some Aastra 9480i phones that are 802.3 af running off of a cisco
3550 that are Pre-Standard power.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps646/prod_qas09186a00800913d3.html
"Q. Does the Cisco Catalyst 3550-24 PWR Switch support the 802.3af inline
power standard?
A. No, this switch supports Cisco Pre-Standard Power over Ethernet. The
Catalyst 3750 Series and Catalyst 3560 Series support the Cisco
Pre-Standard Power over Ethernet and IEEE 802.3af Power over Ethernet."
I used the command
power inline delay shutdown 20 initial 100
on the ports connected to the phones and it seems to be working just fine.
It may just be a lucky break for us but something worth trying?
-=Tom
On Fri, 31 Dec 2010 09:00:40 -0600, Robert E. Seastrom <r...@seastrom.com>
wrote:
Perhaps someone from this august list can offer a clue here.
Have: Cisco 3524-PWR (paleo-POE, pre-802.3af Cisco standard).
It runs the 7960Gs great.
Have: Wireless AP stuff that wants 12v on the unused pairs for
passive POE. 48v will let the magic smoke out.
Might buy: phone that does 802.3af
Want to run these with the 3524-PWR.
I can't imagine that nobody makes a bump-in-the-wire converter for
this application, but haven't been able to find anything other than
802.3af to the passive POE use case.
Anyone got a pointer for me?
Thanks,
-r
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