DS1 Problems - No signal on loopback

[ridge1983]

Hello,

I have a problem with a second hand install that I am doing. It is a definity Si V7. I cannot get a DS1 card to give me a loopback so i can't get it to work on the lines that have been installed. I have set up the DS1, Sig and trunk but the loopback light will not come on when i attach the connector. I know that the loopback cable works because it works on the BT incoming lines. When I take the loopback off the trunk the green light on the front of the card flickers. I have tried 3 different cards and in 2 different cabs. This should be simple, has anyone got any ideas?

Thanks

Paul

 

[jimbojimbo]

Since this is second hand, you might want to look at the DS1 vintage and the Integrated CSU. There have been a few "issues" related to the TN464HP and the 120A CSU. I've had to do a "mix and match" before.

James Middleton
ACSCI/ACSCD/MCSE
Xeta Technologies
jim.middleton@xeta.com

 

[ridge1983]

Hi, I am using an amphenal cable to connect to the back of the definity and taking my pairs out (violet oranges/violet greens). I have tried 2 different vinatages of cards: 464 and 2464.

Is it possable that I am using a too new of processor in an older cabinate? Would this cause issues like this?

 

[telecomturner]

Did you try flip the tx/rx cable pairs?

 

[ridge1983]

yes thats all done, i built an R9 csi today and used the same pairs and same programming to create the loopback and it came in fine... Shame I cant get it going onsite