Paradyne ACCULINK 336x E1 Operator's Manual

Also see for ACCULINK 3360: Quick installation Operator's guide User guide

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Paradyne ACCULINK 336x E1 Operator's Manual Manual pdf 70 page image

ACCULINK 336x E1 NTU4-12 December 1996 3360-A2-GB20-20TroubleshootingThe E1 NTU is designed to provide you with manyyears of trouble-free service. However, Table 4-7 givesyou some direction if a problem occurs.For problems other than those listed in the table, pleasecontact your service representative.Table 4-7(1 of 2)TroubleshootingSymptom Possible Cause SolutionsNo power 1. The power module is not securely attached.2. The wall receptacle has no power.1. Check the power module attachment.2. Check the wall receptacle power by pluggingin some equipment that is known to beworking.Power-UpSelf-Test failsThe E1 NTU has detected an internal hardwarefailure.Contact your field service representative.Message LOS onLoop1 or LOS onLoop2 appears1. Network cable problem.2. The far-end LTU/NTU is not transmitting.3. Network problem.1. Check that the network cable is securelyattached at both ends.2. Check the far-end status.3. Contact your facility provider.Message LOS atDTE appears1. G.703 DTE cable problem.2. No signal being transmitted from the DTE.3. The 120 ohm interface is being used and theRX SHIELD switch is in the EARTH position.1. Check that the G.703 DTE cable is securelyattached at both ends.2. Check the DTE status.3. Change the RX SHIELD switch to the OPENposition when using the 120 ohm interface.Message OOF atNet appears1. Incompatible framing format between thenetwork and the E1 NTU.2. Network cabling problem.3. Facility problem.1. Check that the framing format for the networkinterface is correct.2. Check that the network cable is securelyattached at both ends.3. Contact your facility provider.Message OOF atDTE appears1. Incompatible framing format between theG.703 port on the customer premisesequipment and the E1 NTU.2. G.703 DTE cabling problem.1. Check that the framing format for the G.703DTE interface is correct.2. Check that the G.703 DTE cable is securelyattached at both ends.MessageRAI at Netappears1. Network cable problem.2. Far-end LTU/NTU has detected an LOS, LOF,AIS, or EER condition on the line.3. Facility problem.1. Check that your network cable is securelyattached at both ends.2. Check the status of the far-end device.3. Contact your facility provider.MessageRAI at DTEappearsDTE has detected an LOS, LOF, AIS, or EERcondition.1. Check the status of the DTE.2. Check that the G.703 DTE cable is securelyattached at both ends.MessageAIS at Netappears1. Upstream LTU/NTU is transmitting an AIS.2. The network is transmitting an AIS.1. Check the status of the upstream device(s).2. Contact your facility provider.