T1 short-haul vs. long-haul

Fri Jul 23 18:50:32 UTC 2004

I think we can probably chalk this up to a difference in dialect, for 
lack of a better word...what you're calling an NIU is exactly what I 
would call a smartjack and vice versa. Can you point to any sort of 
"official" documentation that defines these? I'm looking to see if 
anyone in my office has a Newton's as I speak...

-C

On Jul 23, 2004, at 12:15 AM, Michel Py 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.
>
> http://arneill-py.sacramento.ca.us/photos/smartjack1_lr.jpg
> These are smartjacks, RJ48. Two are connected (grey cable, on the 
> right,
> going directly to the CSU/DSU). The red/violet pairs on the right come
> from the NIU.
>
> http://arneill-py.sacramento.ca.us/photos/smartjack2_lr.jpg
> A little more detailed. As you can see, there is nothing smart about
> these, it's a glorified patch panel.
>
> http://arneill-py.sacramento.ca.us/photos/smartjack3_lr.jpg
>> From a distance. The white punch blocks are called "66 blocks".
>
> http://arneill-py.sacramento.ca.us/photos/smartjack4_lr.jpg
> Sometimes the LEC does not install a smartjack, leaving the customer
> and/or contractor to punch it, which typically produces a smartjack 
> like
> this :-)
>
> http://arneill-py.sacramento.ca.us/photos/niu1_lr.jpg
> A very common NIU with the Adtran modules. Each board is basically an
> HDSL "modem", has lights and can be looped. Also present an RS-232 port
> for configuring it with a laptop and the drop banana jacks to plug your
> BERT tester.
>
> http://arneill-py.sacramento.ca.us/photos/niu2_lr.jpg
> Another variation of NIU, very common too. Both NIUs receive power from
> the telco.
>
> Here are the hires:
> http://arneill-py.sacramento.ca.us/photos/smartjack1_hr.jpg
> http://arneill-py.sacramento.ca.us/photos/smartjack2_hr.jpg
> http://arneill-py.sacramento.ca.us/photos/smartjack3_hr.jpg
> http://arneill-py.sacramento.ca.us/photos/smartjack4_hr.jpg
> http://arneill-py.sacramento.ca.us/photos/niu1_hr.jpg
> http://arneill-py.sacramento.ca.us/photos/niu2_hr.jpg
>
> If I have time tomorrow I will post some pictures of an extended DS-3
> demarc at a remote site.
>
> Michel.
>