[124189] in North American Network Operators' Group
Re: "Is TDM going the way of dial-up?"
daemon@ATHENA.MIT.EDU (Justin M. Streiner)
Fri Mar 26 11:40:12 2010
Date: Fri, 26 Mar 2010 11:35:37 -0400 (EDT)
From: "Justin M. Streiner" <streiner@cluebyfour.org>
To: nanog@nanog.org
In-Reply-To: <d066472f1003260815u10dc253eue351b91603689f0d@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Fri, 26 Mar 2010, Rick Ernst wrote:
> I've noticed over the last 3 years or so that TDM, specifically T-1, access
> and transport has been in a steady decline. Customers are moving to FTTH
> and cable, or going WiMAX and Metro-Ethernet. Ethernet seems to have taken
> an even bigger bite out of DS-3. The bigger pipes seem to favor ethernet. A
> recent upgrade from OC-3 to GigE transport actually saved us a large chunk
> of money.
>
> I'm wondering if others are seeing the same behavior, if it's
> market-dependant, or if I'm just imagining things. I'm working on building
> new infrastructure and my current thoughts are to minimize my TDM
> footprint. It would be useful to get a better feel if this is an overall
> trend or something local.
I tend to think this is market dependent. In major population centers,
TDM service may well be on the decline, but I'd suspect that Ethernet
based services have a much lower penetration in areas with lower
population densities.
I don't see TDM going away entirely any time soon because it still comes
in handy for things like out-of-band management, etc, plus nowadays there
is lots of TDM gear on the secondary market that can be picked up
dirt-cheap.
jms
