ADTRAN HDSL2 Installation And Maintenance Practice

Also see for 1223024L2: Installation and maintenance practice Manual

Contents

ADTRAN HDSL2 Installation And Maintenance Practice Manual pdf 26 page image

H2TU-C Front Panel Operation HDSL2 for General Distribution Installation and Maintenance Practice16 61223HDSL2L2-5BH2TU-C FRONT PANEL OPERATIONLED indicators mounted on the front panel of the unit provide status of the HDSL2 circuit.Each indicator is described in Table 9 for the H2TU-C and Table 10 for the H2TU-R.Table 9. H2TU-C Front Panel LED IndicationsFrontPanelLabel Status DescriptionDSL z Greenz RedDSL sync, no errors currently detected, and signal margin ≥ 2 dBNo DSL sync, errors being detected, or signal quality < 2 dBDSX/DS1 z Greenz RedDSX-1 signal is present and synchronized and no errors aredetectedNo DSX-1 signal, or signal is present with errorsALM { Offz Redz YellowNo alarm condition detectedLoss of DSX-1 signal to the unitLoss of DS1 signal to the remoteESF/SF { Offz Greenz YellowUnit is provisioned for unframed dataUnit is provisioned for SF dataUnit is provisioned for ESF dataB8ZS/AMI z Greenz YellowUnit is provisioned for AMI line codeUnit is provisioned for B8ZS line codeLBK { Offz YellowUnit is not in loopbackUnit loopback is active toward network or customerTable 10. H2TU-R Front Panel LED IndicationsFrontPanel Label Status DescriptionDSL z Greenz RedDSL sync, no errors currently detected, and signal margin > 2 dBNo DSL sync, errors being detected, or signal margin ≤ 2 dBDS1 z Greenz RedDS1 signal is present and no errors currently being detectedNo DS1 signal or framing mismatchALM { Offz Redz YellowNo active alarm presentLoss of DS1 signal to the unitLoss of DSX signal to the H2TU-CESF/SF { Offz Greenz YellowUnit is provisioned for UNFRAMED dataUnit is provisioned for SF dataUnit is provisioned for ESF dataB8ZS/AMI z Greenz YellowUnit is provisioned for AMI line codeUnit is provisioned for B8ZS line codeLLB/RLB { Offz Greenz YellowUnit is NOT in loopbackActive remote loopback from the H2TU-C toward the customerThis unit is in loopback (network and/or customer)1181113L2DSLDSX/DS1ALMB8ZS/AMI(YEL) (GRN)ESF/ SF(YEL) (GRN)LBKTXRXEQLOCLBK1223024L2DSLLOCALDS1ALM(GRN)SF(YEL)ESF/(GRN)AMI(YEL)B8ZS/(GRN)RLB(YEL)LLB/URH T