Where's the Fiber?
I was reading about T1 lines and came across this statement.. It basically
said T1's are made up of copper...Wasn't T1 made up of Fiber? Is the new
trend to move T1 away from fiber and use copper?
"
http://www.pulsewan.com/data101/pdfs/t1basics.pdf#search='t1%20via%20copper'
page 4
T1 Physical Characteristics
A T1 is physically made up of two balanced pairs of copper wire (commonly
known
as twisted pair). The pairs are used in a full duplex configuration where
one pair
transmits information and the other pair receives information. Customer
Premises
Equipment (CPE) typically terminate a T1 with a RJ-48C jack. The following
illustration shows a typical T1 cable and interface."
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users@lists.digium.com>
Sent: Saturday, June 17, 2006 5:08 AM
Subject: Re: [Asterisk-Users] T1 Copper or T1 Fiber Line
Thanks for the inso...
So T1 lines in the United States also use copper lines from the company to
the telephone exchange in some installations?
What's the benefit to the subscriber to this?
----- Original Message -----
From: "Andrew Kohlsmith" <[EMAIL PROTECTED]>
To: <asterisk-users@lists.digium.com>
Sent: Friday, June 16, 2006 9:11 AM
Subject: Re: [Asterisk-Users] T1 Copper or T1 Fiber Line
Any T1 I've seen in the last 3 years has actually been DS1-over-HDSL2.
What
comes in to the building is a single pair of copper into the smartjack,
and
then you have a traditional DSX1 to plug in to. I don't think "real" T1s
(in
the physical sense) have existed for years.
Before DS1-over-HDSL2 the ones I had provisioned were DS1-over-HDSL (2
copper
pairs)... never had a real, genuine T1.
But again... you don't get to play with that side of it. You order a T1,
you
get a smartjack that has a T1 jack (DSX1) on it and what's on the other
side
is irrelevant.
-A.
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