Clearing MG 1000T faults 87Condition Possible cause ActionSystem message indicatesconference loop isdefective.Defective SSC circuit card If a fault is indicated on conferenceloop, replace the NTDK20 SSC circuitcard.Reuse the daughterboards andsecurity device installed on theoriginal NTDK20 SSC circuit card.Defective conference loopwith no system messageDefective IP daughterboardor SSC circuit cardIf there are no messages indicatinga fault on any conference loop, testeach conference loop in the systemby entering:LD 38CNFC loop ("loop" represents theconference loop number)If the conference loop is disabled, tryto enable it by entering:LD 38ENLL loop ("loop" represents theconference loop number)Defective NTDK20 SSCcardInstall a new NTDK20 SSC circuitcard.Reuse the daughterboards andsecurity device attached to theoriginal NTDK20 SSC circuit card.If the card tests "OK", the NTDK20SSC circuit card was defective.If after a few minutes the problemreoccurs, replace the Media Gateway.Clearing MG 1000T faultsThe MG 1000T platform provides the interface between network switchingand digital trunks. MG 1000T faults can disable network equipment.An OVD message indicates a network loop is disabled and all connectionson the loop are disabled. The network loop number corresponds to aspecific card number in the MG 1000T. System messages can also indicatethat one or more cards are defective or disabled without producing anOVD message. In either case, look up all system messages in SoftwareInput/Output Reference – System Messages (NN43001-712) and followthe instructions given.Manual continuity tests can be used to isolate faults. See LD 30 in SoftwareInput/Output Reference – Maintenance (NN43001-711) for details onperforming the tests.Nortel Communication Server 1000Communication Server 1000E MaintenanceNN43041-700 01.02 StandardRelease 5.0 20 June 2007Copyright © 2007, Nortel Networks.
