NIU ---------> Ds1 card - max cable length? 1

[wildcard100001]

I can't seem to find this information in the manuals....

Do you know the max cable distance from NIU to DS1 card?

Thanks,

Wildcard

 

[bhanson184]

When you add your DS1 card you can change the distance if there is a problem. Look in your manual under add DS! then look at Line Compensation. There are setting on the DS1/CSU settings. I've extended mine several hundred feet and have not changed settings. What kind of distance are you talking?

Valid for Line Compensation
entries Usage
1 Length: 000–133 (ft), 000-40.5 (m)
2 Length: 133–266 (ft), 40.5–81.0 (m)
3 Length: 266–399 (ft), 81.0–122 (m)
4 Length: 399–533 (ft), 122–163 (m)
5 Length: 533–655 (ft), 163–200 (m)

 

[wildcard100001]

Whew.... well there was talk that it was 750ft away....

Given the line compensation values, it seems that 655 ft is the max. Would you agree?

Thanks,

Wildcard

 

[letman]

I have read that the distance from the csu to the niu should not be longer than 655 ft.

 

[bhanson184]

I would try it and then adjust the Line Compensation as needed. I have extended T1's all over our campus with having any problems.

 

[manfmmd]

A lot depends on the condition of the lines too. I have 3 E-1's running over 1200' with no LBO. YMMV.

 

[kwing112000]

I have a few PRI's running over 1500' from d-marc. Then i have had them around 500' that would never come up. It depends on the NIU. If it is a powered smartjack then it is really a repeater and can go alittle further. If is is just a RJ48x then maybe not as far.