I am using NM-8A/S card on Cisco 2821 router . Very frequently , few serial ports on NM-8A/S card get admin shutdown . The error message which comes is
%CIRRUS-3-HWNORESPONSE: The CD2430 Controller is not responding, power cycle the router.
The cisco site says that there could be clocking problem or non standard cable is being used.
The link is OK. I doubt there could be problem with V.35 DTE cable . Can I remotely find on router by enabling any command whether the cable being used is Cisco cable or local make ?