[Asterisk-Users] Where's the Fiber

[James Harper]

We have an unframed E1 used for data, and it is fiber all the way to our
server room, and then broken out to a G.703 interface.

A few of the E1's I've seen lately for voice have actually been g.shdsl
to the premises with an interface converter between that and the pbx.

You can always rely on your telco to do what they need to do for the
minimum investment possible, and if that means using fiber instead of
copper or visa versa then that's what they'll do. As long as the media
can support the bandwidth it almost doesn't matter what goes on
inbetween, as long as it comes out in the right format (eg T1 in your
case) at each end.

James

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of dthurn at tstt.net.tt
> Sent: Sunday, 18 June 2006 09:29
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] Where's the Fiber
> 
> 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%20cop
pe
> r'
> 
> 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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