T1 short-haul vs. long-haul

Michael Loftis mloftis at wgops.com
Fri Jul 23 05:48:19 UTC 2004


hate to say it but what is pictured is not a smart jack, it is as you say a 
glorified patch.


a *TRUE* smart jack DOES have the tiny bit of circuitry necess'y to cause 
it to loop the line back when nothing is connected to it, some can do it 
via line signaling as well.

in some telco territory what they call a smart jack is, most certainly, NOT.

as always, YMMV, SBC/PacBell in SFO area usually does use a true smart 
jack, but not always.  out of a number of t-1s installed for both voice and 
data while working at 2 Connecticut i was about 80/20 in favor of smart 
jacks.

--On Thursday, July 22, 2004 21:15 -0700 Michel Py 
<michel at arneill-py.sacramento.ca.us> wrote:

>
>> Christopher Woodfield wrote:
>> In the interest of complicating things further, I think
>> you have NIU and smartjack backwards in your explanation
>
> You think, which is a good beginning. Seeing it with your own eyes might
> be of some interest, NTM that doing it for a living for 20+ years may
> give new an entire new outlook on it.
>
> For the entertainment of non-american readers, wannabes, and rookies I
> stopped by a T1 MPOE on my way home and took a few photos.




More information about the NANOG mailing list