Linked by Thom Holwerda on Mon 18th Jul 2005 12:20 UTC
Internet & Networking With the uptake of IP telephony continuing apace and the proliferation of IP devices in general, has the time finally arrived for an old concept power over Ethernet (PoE)? For certain deployments of IP based technology, PoE is not only cost effective but arguably essential.
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PoE, or EoP
by transputer_guy on Mon 18th Jul 2005 13:56 UTC
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I worked for years on Ethernet over powerline which is really the same thing in reverse, powerline networking only works well at low data rates. Adding power to cat cable is a really dumb idea for the same reasons, it can only degrade signal integrity.

If the 2 must share the same wire, then people will start abusing it and the line characteristics will likely change. The phone can distruibute a small dc power for phone use only because the speech bandwidth is so low and phone system has done this since Bell, and its battery backed for ultra reliable.

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