Power considerations with FTTE

NETWORK WORLD NEWSLETTER: JEFF CARUSO ON HIGH SPEED LANS
10/06/05
Today's focus: Power considerations with FTTE

Dear networking.world@gmail.com,

In this issue:

* Reader asks about Power over Ethernet when using FTTE
architecture
* Links related to High Speed LANs
* Featured reader resource
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Today's focus: Power considerations with FTTE

By Jeff Caruso

A reader recently followed up with me on the fiber optic cost
model I profiled <http://www.networkworld.com/nllan8264> in the
past couple of weeks, asking a question regarding VoIP phones
when using the fiber-to-the-telecommunications-enclosure
architecture.

He writes:

"As an infrastructure consultant one aspect of cabling that
interests me is integrating voice. In today's integrated
voice/data environments providing for IP phones is important and
a key issue is the power for the phones. In a closet-based
system with PoE [Power over Ethernet] it is relatively simple to
provide UPS facilities. I feel the FOLS [TIA's Fiber Optics LAN
Section] model ignores this dimension. Any comments?"

I passed the message on to FOLS, and this was their response:

"One way to address this issue is to provide a dedicated circuit
to the Telecommunications Enclosure or maybe handle multiple
enclosures off one circuit.

"In order for the FTTE to work there has to be a mini-switch or
multiple switches in the Telecom Enclosure which need power.
This circuit would be tied back to the equipment room and would
reside on the same UPS or battery backup as the equipment in the
equipment room.

"Once you have the dedicated power to the Telecom Enclosures, a
PoE midspan patch panel is used for running from the Telecom
Enclosure to the end device. This is a very simplistic approach
and lends to great flexibility. All we are doing is getting
fiber closer to the end device to allow for extended distances,
higher bandwidth, smaller pathways and spaces, less fuel loads,
greater flexibility and lower building cost.

"Just picture the Telecom Enclosure as a mini TR [telecom room]
and treat it the same way. Just like a TR has to have dedicated
power, the mini-TR needs the same thing. There are other ways to
address this, but this is one of the more practical ways."

Thanks to the reader and to FOLS for following up.

The top 5: Today's most-read stories

1. How to solve Windows system crashes in minutes
<http://www.networkworld.com/nllansalert7676>
2. Nortel faces uphill battle
<http://www.networkworld.com/nllan8094>
3. Cisco pushes new security software
<http://www.networkworld.com/nllan8095>
4. WLAN QoS specification approved
<http://www.networkworld.com/nllan8265>
5. Somebody's got to pick up the 'Net's tab
<http://www.networkworld.com/nllan8266>

_______________________________________________________________
To contact: Jeff Caruso

Jeff Caruso is managing editor of online news for Network World.
He oversees daily online news posting and newsletter editing,
and writes the NetFlash daily news summary, the High-Speed LANs
newsletter and the Voices of Networking newsletter. Contact him
at <mailto:jcaruso@nww.com>
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Asking More of Wireless LANs: The Rise of Multi-Service Networks

Join experts as they explore the expanding role of wireless LANs
in the enterprise, specifically the role of multiservice
networking. Learn about one company's approach to delivering a
multi-service wireless LAN.
http://www.fattail.com/redir/redirect.asp?CID=116044
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FEATURED READER RESOURCE

IT PROS SHARE THEIR TALES OF MAKING ITIL WORK

Running an enterprise network is challenging. IT organizational
change can be even more so if managers don't balance efforts
proportionally across people, process and technology.
Implementing best practices frameworks such as Information
Technology Infrastructure Library (ITIL) can help, but they
introduce their own set of challenges. Click here for more:

<http://www.networkworld.com/news/2005/092205-itil.html>
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