[asterisk-users] POE injector

Noah Miller noahisaacmiller at gmail.com
Tue Jul 24 06:46:59 CDT 2007


> IEEE802.3af uses same 4 wire as data.
> thats what Polycom uses.
> the way i'm seeing it we are better off with poe switch(looking at the
> price).

802.3af has two different modes:

Mode A: uses the same 4 wires as 10/100 ethernet, typically done by
PoE endpoints like switches
Mode B: uses the unused pairs on 10/100 ethernet, typically used by
midspan injectors


- Noah



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