[comp.dcom.telecom] Fiber Optics and ESS??

SYSMATT@ukcc.uky.edu (Matt Simpson) (12/12/89)

 
My local CO has just switched over to ESS (I don't know what model),
which means subscribers have been deluged with mail and phone calls
from the LD carriers telling us that equal access is coming, and we
have to select a default carrier. This much I can understand. What I
can't understand is all the propaganda from the local BOC (South
Central Bell), in the form of bill inserts, news releases, speeches to
civic clubs, etc.

They keep talking about their new fiber-optic network, and how it
makes all this new neat stuff possible. The miracle of fiber-optics
will allow us to have call-forwarding, call-waiting, etc.  I thought
all that stuff was done in the switch -- what does the transmission
media have to do with it. Also, where is this amazing new fiber-optics
network? I don't think I have glass fibers running into my house, it
looks like copper wire to me.

Has anyone heard of fiber being used anywhere in the local system,
other than inter-office trunks? Is there any connection at all between
fiber-optic cables and the availability of all these new features, or
does SCB just think we're so dumb they can throw all this gee-whiz
hype at us and expect us to be suitably amazed?

ms6b+@andrew.cmu.edu (Marvin Sirbu) (12/12/89)

You are right that most of the gee whiz services BellSouth talks about
are a function of the switch, not of the type of wire to the home.

On the other hand, there are about 20 fiber to the home trials
underway in various parts of the U.S.  Several combine voice and video
delivery, some voice only.  Bellsouth has been a leader in undertaking
such trials, but every RHC has one underway.  Don't hold your breath
waiting for generalized availability.  The majority of trials involve
new subdivisions where they had to go install new wiring anyway.
Replacement of existing copper to the home with fiber is a decade (at
least) away.

Marvin Sirbu
Carnegie Mellon University

brianc@zeta.saintjoe.edu (Brian Capouch) (12/14/89)

In TELECOM Digest #570, Marvin Sirbu writes:

>Replacement of existing copper to the home with fiber is a decade (at
>least) away.

I wish he would have marked this as an opinion.  This topic, of
course, has been the subject of hot debate amongst telco and
networking techies, not to mention savvy venture capitalists, for the
past year at least.  There is definitely *not* yet a consensus.

I am of the "sooner" frame of mind.  With the advent of FDDI, SONET,
and other high-bandwidth fiber technologies, coupled with a decreasing
premium for the cost of installing fiber, there is bound to be a move
on the part of *all* common information carriers to wire everything
new with fiber.  This will, IMHO, cause an upsurge in demand on the
part of business and residential consumers, and that resultant demand
will push providers into rewiring the rest of the plant with fiber.

The bigger question is *who* is going to do the wiring.  Will it be TV
cable companies, local telcos, or some other innovative entity that is
out there on the fringes right now, waiting for the cashflow equations
to work out right?  The "50 Megabit Living Room" that the folks at the
Media Lab have been talking about will be here sooner than most think.
"Telecommunications" magazine carried a very informative article about
the financial aspects of fiber to the home a year or so ago, and I'm
sold on the 5-year timespan as being most likely.  But of course, this
is just an opinion.  I'm inviting flames.

myerston@cts.sri.com (12/16/89)

When I read Marvin Sibu's original comment (No fiber to the home for a
decade (at least)) I thought he was being wildly optimistic.  Now
Brian Capouch sees it within 5 years.  Opinions being what they are...
Here is mine:

Facts:  [Maybe Factoids :-)]

o  We are a long way from rudimentary steps like digital local loops to
provide even "ISDN-like" services.  Read the actual NUMBERS behind the
trials, announcements and PR BS.

o  While fiber may be getting cheaper vis-a-vis copper the terminal
equipment isn't.  How is the fiber going to support grammy's black 500
POTS set?.  Lets see... a fiber network interface, a fiber mux, a
fiber-to-copper converter, an ISDN Terminal Adapter... plus, of course
an uninterruptable power source.

o  Market tests show that most of the general public is not as
impressed as us techies by things like HDTV.  How many people do you
know have megabuck TVs connected to rabbit ears or tolerate third rate
CATV systems?  Check the history of Teletex services, bank-at-home and
interactive video in the US.

I wish it were not so, but I think that fiber-to-the-home or even its
cousin fiber-to-the-curb are much more than 10 years away.  I doubt if
things like ISDN, HDTV standards, or even Calling-Party ID ( :-) )
will be settled by the year 2000.

Of course, the 37th re-incarnation of the AT&T Picture Phone will be
"just over the horizon" by the year 2000.

Just an opinion.

dave@uunet.uu.net (Dave Levenson) (12/18/89)

In article <2193@accuvax.nwu.edu>, myerston@cts.sri.com writes:

> When I read Marvin Sibu's original comment (No fiber to the home for a
> decade (at least)) I thought he was being wildly optimistic.  Now
> Brian Capouch sees it within 5 years.  Opinions being what they are...
> Here is mine:
 ...
> I wish it were not so, but I think that fiber-to-the-home or even its
> cousin fiber-to-the-curb are much more than 10 years away.

In my neighborhood, they already run T-1 to the curb -- actually to
the SLC-96 buried beneath the curb a couple of blocks from here.  In
the bundle of cables that feed the SLC-96 vault from the CO, there is
one bundle with little red plastic markers hanging from it next to
every poll.  The marker warns repair crews that the bundle contains
optical fiber!  Walking the pole line, I have followed the fiber to
where it goes underground, a block from the AT&T Bell Labs complex at
Liberty Corner!

Not exactly fiber to the home, or to the curb, but it's out there in
the street.  The conversion to copper, and to metallic base-band DC
loop technology, is available in the SLC-96 equipment.  When a service
that is of some value to ordinary comsumers (other than Bell Labs!) is
offered, the technolgy appears to be in place to deliver it.


Dave Levenson                Voice: (201) 647 0900
Westmark, Inc.               Internet: dave@westmark.uu.net
Warren, NJ, USA              UUCP: {uunet | rutgers | att}!westmark!dave
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