The 904 is a sip router. The pri is delivered by SIP and requires a cross over cable to the PRI. Plug the pri card directly into the router and bypass the csu and see what happens with a cross over cable. Pin outs are 1 to 5, 2 to 4, 4 to 2, 5 to 1

Sometimes it can be something really simple, plugged int the wrong port, like the ethernet port instead of the PRI port on the 904.

Last edited by Derrick; 05/12/17 02:49 PM.

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