[Asterisk-Users] Where's the Fiber

[dthurn at tstt.net.tt]

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: <dthurn at tstt.net.tt>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at 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" <akohlsmith-asterisk at benshaw.com>
> To: <asterisk-users at 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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