jefrhi236
join:2002-07-05
Spring, TX
| reply to panth1
Re: My T1 install pics
The board in the NID is referred to as a Smart Jack.
That unit specifically is an Adtran H4TU-R. That stands for HDSL(High-Frequency Digital Subsciber Line)4-Wire Remote, meaning it uses 2 pairs of copper to get the loop to the premise.
There is another unit in the CO that is an H4TU-C, or office repeater.
The 2 units sync with one another and create 2 768 Kb loops combined to make the 1.536 Mb T-1 pipe. Inside the span itself, they communicate using 2B1Q encoding, once the data reaches the prem, the encoding is stripped off and returned to the original DS-1 signal.
The units both have performance monitoring ability and remote loopback features to allow testing of the loop remotely by either the ISP or Telco.
OK, Lesson over!
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panth1
The Coyote
join:2000-12-11
Boca Raton, FL | reply to Kamakzie
What does the circuit board in the NID do? |
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Kamakzie
join:2001-08-13
Cedar Springs, MI | reply to Otto
Unfortunately the ISP I am going through might frown on my pulling 45 MB/s.  |
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