RAD problem 2

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Does anyone know how the Xmit and Rcv pairs pinout on the RJ45 connector of a DS1 board? I,m trying to migrate a copper PRI between a Legend R7 and Magix R4 to fiber, using RAD fiber modems.

I tried to connect the RAD's to their respective DS1 board with a straight-thru Cat 5e cable. The leds on the RAD's seemed to indicate that everyting was a go, but the DS1 boards both displayed a red led. Called RAD tech support and they seemed to think that I needed to cross over the Xmit/Rcv pairs at both ends. Tried that, and the calls still didn't go thru.

Is there something I am overlooking? The only options on the RAD's I used was T1 and AIS.

 

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Just a quick note to say that the mystery is solved at last. We replaced the DCD board on the Magix R4 and the ciruit came up like everyone has been telling me it would. Today was do or die for me. We determined after analyzing the current errors, that the MIS errors were only happening on one side. Despite testing the DCD board and having it pass all the tests, we were able to resolve this issue by replacing it with a new board.

A huge thank you to all of you on this forum for your helpful comments. Special thanks to Merlinman, TTT, and Dagwoodsystems for their kind patience in answering a barrage of questions behind the scenes.

Alex