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To: George T. Santamaria who wrote (35203)2/17/1998 10:01:00 PM
From: Glenn D. Rudolph  Respond to of 61433
 
A telco has to install and maintain a tw pr of wire for each cust all of the way to his
exchange. Those big, thick black telephone cables that you see on poles have hundreds of
twisted pair in each and there are numerous junctions that have to be spliced by hand
over the route from the exchange to the customer's premises. Every time a car clips a
pole or a manhole gets flooded and service is disabled, much of that hand labor has to be
redone. Most of that infrastructure already exists but it is aging and it will someday have
to be replaced at today's union labor costs. Much of the work in maintaining telco tw pr
just goes into manually checking and rechecking the physical routing of a twisted pair
through various junction boxes, manholes and cross-connects.


George,

You have a lot of good information in this post. Much of which I did not know. Do you believe the telcos will stay with the old twisted pairs far into the future? The constant repairs seem as though it will not be cost effective.

Glenn



To: George T. Santamaria who wrote (35203)2/17/1998 10:34:00 PM
From: blankmind  Read Replies (1) | Respond to of 61433
 
splitterless adsl.



To: George T. Santamaria who wrote (35203)2/18/1998 7:49:00 AM
From: matt gray  Respond to of 61433
 
good post.

Another issue that supports your argument is
that the Digital Loop Carrier Systems are
frequently from different manufacturers. Also
they are distributed in the field. Subsequently
to change out a system to ADSL is very expensive
in terms of engineering, circuit pack
replacement, training etc.

As much of the population moves beyond reach
of the CO, it may less expensive to
abandon the existing copper plant and move towards
a fiber node based architecture.