I checked with Cross-cable same issue, Service provider check on the PRI tester its works when connect on Router not works,,, I checked with the New Cables...following is the output when we run devug isdn command..
ISDN TEST CALL #0 to XXXXXXXXXX at 64 Kbps failed aborting the remaining 1 calls
If cable is fine then you should check the framing and line coding configured under the controller. It must match on your side and ISP side.. You can verify using below command:
Bru#show controllers e1
E1 0 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
Version info of Slot 0: HW: 2, Firmware: 4, PLD Rev: 2
Manufacture Cookie is not programmed.
Framing is CRC4, Line Code is HDB3, Clock Source is Line Primary.
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