[Hidden-tech] WiredWest fiberoptic broadband

[Matthew S. Crocker]

Well if you only have one pair of wires then yes it is half-duplex unless you do frequency division like DSL.  Cat 5 is 2 pairs of wires each pair handles traffic in each direction.   With fiber you can do bidirectional transceivers where one transmits @ 1490nm and the other transmits @ 1550nm.   Put them on the same strand of fiber and you get full duplex.  Course Wave Division Multiplexing is pretty cheap these days and everything is built into the GigE SFP

-Matt

----- Original Message -----

> From: ussailis at shaysnet.com
> To: matthew at corp.crocker.com, hidden-discuss at lists.hidden-tech.net
> Sent: Sunday, April 18, 2010 10:49:15 AM
> Subject: Re: [Hidden-tech] WiredWest fiberoptic broadband
> 
> I thought everything over Internet was half-duplex, because that is
> all
> that can be sent over a pair of wires, unless frequency division
> multiplex
> is used, as the phone company invented years ago.
> 
> 
> Jim Ussailis
> jim at nationalwireless.com
> 
> PS Wireless does not have to be half-duplex. I tried a full duplex
> communication on the 11 meter ham band once back in 1958. Slick!
> 
> 
> Original Message:
> -----------------
> From: Matthew S. Crocker matthew at corp.crocker.com
> Date: Sat, 17 Apr 2010 12:50:41 -0400 (EDT)
> To: hidden-discuss at lists.hidden-tech.net
> Subject: Re: [Hidden-tech] WiredWest fiberoptic broadband
> 
> 
>    ** Be sure to fill out the survey/skills inventory in the member's
> area.
>    ** If you did, we all thank you.
> 
> 
> 
> Another problem with wireless is when people says 'wireless' they
> normally
> mean 'unlicensed wireless'.  Unlicensed wireless has a slew of issues
> with
> frequency competition.  Point to Multipoint unlicensed wireless also
> half
> duplex polled network.  half duplex networks get destroyed when the
> users
> start doing high packet rate full duplex applications (VoIP,
> peer2peer,
> VPN, SSH, ...).   Wireless is a good short term fill in the gap
> solution
> but it isn't  a viable long term solution and it doesn't support the
> future
> of the Internet.
> 
> Licensed point to point wireless links can be used for back haul in a
> regional backbone.
> 
> A Regional open fiber network would be a huge win for the area.  Towns
> need
> to be working on funding/prop 2.5 override to budget a last mile
> fiber
> build in the town.  Connect your town to the state middle mile project
> and
> everyone wins.  Towns should also not expect the fiber network to
> generate
> revenue,  If the town makes money off it then it is basically a tax
> and
> there are other ways to tax the residents that make more sense.
> 
> -Matt
> 
> -- 
> Matthew S. Crocker
> President
> Crocker Communications, Inc.
> PO BOX 710
> Greenfield, MA 01302-0710
> http://www.crocker.com
> P: 413-746-2760
> 
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-- 
Matthew S. Crocker
President
Crocker Communications, Inc.
PO BOX 710
Greenfield, MA 01302-0710
http://www.crocker.com
P: 413-746-2760