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Nokia DNT2Mi sp/mp user manual Troubleshooting, Strain relief

Models: DNT2Mi sp/mp

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5.8.1Troubleshooting

Installing DNT2Mi

5.8.1Troubleshooting

Remote-powered DNT2Mi

If there is a backlight but no menu on the display of DNT2Mi, the line is too long, or there is a line break on one of the pairs.

If the initial displays are shown, but the unit resets after a while, the situation may be due to the fact that the line is too long.

If there is no backlight to be seen, the line is too long, or the power supply is broken.

The status LED is red

Check the Status field of the top level menu display and check the Status and Alarm submenus under the Monitoring menu.

Location of error source

Test the connection according to information in Section 7.3.

Note

The network terminal must be connected to a ground mains outlet.

5.8.2Strain relief

In an AC-powered unit, guide the power cable through the strain relief located under the power interface to secure a firm connection (see Figure 24).

In a DC-powered unit, the DC-power cable is connected and guided through the strain relief at the factory.

Figure 24. Strain relief

DN01145897	© Nokia Corporation	37 (128)
Issue 2-0 en	Nokia Proprietary and Confidential

Image 37

Nokia DNT2Mi sp/mp user manual Troubleshooting, Strain relief

Contents

User Manual C33975.85--B0 DNT2Mi sp/mpIssue 2-0 en Data Network Terminal Single-port and MultiportDNT2Mi sp/mp, DC-powered DNT2Mi sp/mp, AC-poweredDNT2Mi sp/mp, remote-powered Product codeContents Summary of changes 1 About this document ContentsInstalling DNT2Mi 2 Introduction to DNT2Mi 3 Applications 4 Construction and interfacesUsing Q1 menus Using front panel menus10 Technical specifications Maintaining DNT2MiGlossary Appendix AIssue 2-0 en DN01145897Nokia Corporation Issue 2-0 enDN01145897 Nokia Proprietary and ConfidentialIssue 2-0 en Summary of changesDocument DateNokia Corporation Issue 2-0 enDN01145897 Nokia Proprietary and Confidential1 About this document Nokia Corporation Issue 2-0 enDN01145897 Nokia Proprietary and Confidential2 Introduction to DNT2Mi G.704/2M EIA-530-A Ethernet VF D2048 3 Applications DNT2Mi provides an n x 64 kbit/s n = 1 to 32 data access and enables TDM multiplexing of line rates to three n x 64k ports. It also incorporates V.110 rate adaptation enabling port rates lower than 64 kbit/s 4.1 Front panel 4 Construction and interfaces4.1.2 Local management interface 4.1.1 Indicators and keysCode ConnectorName LengthCode ConnectorName LengthRemote-powered DNT2Mi 4.2 Rear panelREMOTE-POWERED VERSION Multiport DNT2MiPin Line interface 4.2.1 Terminal interfacesNokia Corporation DN01145897G.704/2M Ethernet Connector typeFigure 10. DTE interface options continued DTE interface adapter units5.1 Electromagnetic compatibility 5 Installing DNT2Mi5.2 Grounding of DNT2Mi 5.3 Clearances around DNT2Mi 5.5 Inserting DTE interface units 5.4 Work orderThen proceed according to the steps below To insert DTE interface units 5.7 Installing DNT2Mi on a wall or into a rack 5.6 Free-standing installationTo install DNT2Mi free-standing 5.7.1 Installing DNT2Mi on a wallTo install DNT2Mi on a wall ø 6 mm bit 45 mm Figure 15. Drilling screw holes into a wall 100 mm Figure 14. Marking of fixing points for wall screwsTo uninstall a wall-mounted DNT2Mi 5.7.2 Uninstalling a wall-mounted DNT2Mi5.7.3 Installing a modem shelf into a 19-inch rack 5.7.4 Installing DNT2Mi in a modem shelf To install a modem shelf into a 19-inch rackTo install DNT2Mi in a modem shelf To uninstall DNT2Mi from a modem shelf 5.7.5 Uninstalling DNT2Mi from a modem shelf5.8 Connecting power supply 1.0 mm Lines correct Lines cross-connected5.8.2 Strain relief 5.8.1 Troubleshooting5.9.1 Verifying the installation 5.9 Completing the installationTo verify that you have installed DNT2Mi correctly 5.9.2 Adjusting the LCD display6 Commissioning DNT2Mi 6.1 Automatic power-up test6.2 Management 6.5 Port settings 6.4 Line settings6.3 Timing source 6.7 Protection settings 6.6 Time slot settings Q1 6,56.8 Measurements Bit error ratio 6.9 Default valuesNoise margin Line parameters Table 5. Global parameters ContinuedTable 7. Multiplexer parameters Port parameters, V-series V.11, V.28, V.35 or EIA-530-APort parameters, G.703/64k Port parametersPort parameters, G.704/2M 6.10 Factory values Nokia Corporation Issue 2-0 enDN01145897 Nokia Proprietary and Confidential7.1 Getting general information 7 Maintaining DNT2MiDNT2Mi AS Line no incoming signal Figure 27. Example of Fault display 7.2 Monitoring alarmsAlarm 7.3 TestingQ1 message Front panelFront Power up testAutomatic panelAutomatic Frontpanel managementFigure 30. Network test loop single-port Figure 29. Local test loop in a portFigure 31. PRBS 29-1 test transmitter/receiver 7.4 Checking measurements and statistics Information DNT statistics via the front panel or Q1Abbreviation and/or DescriptionUsing front panel menus 8 Using front panel menusIssue 2-0 en DN01145897INTERFACE SIGNALS LED INDICATORSMultiport DNT2Mi Single-port DNT2MiDisplay 8.1 Main menu levels 8.2 Configuring DNT2MiFigure 36. Front panel main menus The modem automatically detects the port adapter type in use and shows the corresponding configuration parameters under the Configure Port menu option Figure 37. Configuring port 1 / V.xx type interfaces 8.2.1 Configuring a portNokia Corporation DN01145897Issue 2-0 en Using front panel menusDN01145897 Nokia CorporationNokia Corporation Figure 39. Configuring ports / X.21 interfacesDN01145897 Nokia Proprietary and ConfidentialIssue 2-0 en Using front panel menusDN01145897 Nokia CorporationNokia Corporation Figure 42. Configuring ports / G.704 interfacesDN01145897 Nokia Proprietary and ConfidentialIssue 2-0 en Using front panel menusPorts 2 and 3 in DN01145897Figure 44. Front panel menus for line settings 8.2.2 Configuring a lineNokia Corporation DN01145897Figure 45. Front panel menus for common settings 8.2.3 Configuring common settingsFigure 46. Front panel menus for default settings 8.2.4 Default settingsNokia Corporation DN011458978.3.1 Testing a port 8.3 Testing DNT2Mi8.3.2 Testing a line Using front panel menusFigure 49. Front panel menus for testing the equipment 8.3.3 Testing the equipmentNokia Corporation DN011458978.4.1 Monitoring a port 8.4 Monitoring DNT2MiUsing front panel menus Issue 2-0 enFigure 51. Front panel menus for monitoring a line 8.4.2 Monitoring a lineNokia Corporation DN01145897Figure 52. Front panel menus for monitoring alarms 8.4.3 Monitoring alarms8.4.4 Monitoring equipment information 8.4.5 Self testingNokia Corporation DN011458979.1 General 9 Using Q1 menus5. Controls temporary 6. Settings permanent 4 Identifications 5 Controls 6 Settings 7 Measurements 8 Statistics 1 Fault displayDNT settings Figure 55. Main Q1 menu structureGive new Eq name Figure 56. Identifications menu4,7,4 Figure 57. Identifications menu continued4,7,4,0 4,7,4,1DNT controls Figure 58. Controls menu5,2, port # Figure 59. Settings menu structure Interface type Figure 60. Settings menu structure continuedFigure 61. Settings menu structure continued Power backoff 0 Display 1 ON 2 OFF Using Q1 menusBER alarm limit 0 Display 1 E-3 2 E-6 BER alarm severity 0 Display 1 No alarm 2 A-level alarm6,4,port# Figure 63. Settings menu structure continued6,5,1 6,5,1,TS#6,4, port # Figure 64. Settings menu structure continued6,4, port#,2 6,4, port#,4G.704/2M & D2048 Interface settings 6,4, port # Figure 66. Settings menu structure continued, V-type adapters X.21 interface settings 6,4,port#,3 Figure 67. Settings menu structure continued, X- and VF-type adaptersVF Interface settings 6,4,port#,3 6,4,port #,3,1G.703/64k Interface settings 6,4, port # Figure 68. Settings menu structure continued, G.703/64k & G.703/2MG.703/2M Interface settings 6,4, port # 6,4,port #,3,1NM = Noise margin At = Attenuation Figure 69. Measurements menu structureFigure 70. Statistics menu structure 8,2,3 Figure 71. Statistics menu structure continued8,2,4 8,3,1Figure 72. Privileges menu structure Give new password 1...7 characters9.2 DNT controls 9.3 DNT settings9.3.1 Display 6,0 Q1 speed 6,1,1 9.3.2 Service options 6,19.3.3 Timing source 6,2 DNT2Mi Internal timingPort timing DNT2MiThis menu branch allows you to perform settings to a line 9.3.4 Line settings 6,3In this menu, you can select the following line settings SHDSL mode 2-wire or 4-wire mode Line rateSTU-C 6,3,3,1 Figure 76. Measured SHDSL symmetric PSD and mask 4-w, 2M or 2-w, 1M Figure 75. Measured SHDSL symmetric PSD and mask 2-w, 2MNokia Corporation DN01145897Give line rate 6,3,3,1,2,n 6,3,3,1,4,n kbit/s DNT2Mi reach9.3.5 Port settings 6,4, port # Synchronous or asynchronous 6,4, port #,3,1 103 113 114 104 115 CT103 timing by CT113, Line timing DNT2MiTx Line SHDSL Rx TimingCT103 timing by CT113, Internal timing DTE circuits 6,4, port #,3,3DNT2Mi CT103 timing by CT114, Internal timingCTS use 6,4, port #,3,3,1 G.704/2M-type interface settings 6,4, port #,3DCD use 6,4, port #,3,3,2 DSR & DTR use 6,4, port #,3,3,3CRC monitoring only with the D2048-type adapters BF monitoring only with the D2048-type adaptersTS mapping 6,4, port #,3,4 Figure 80. Time slot mapping example, TS0 locally terminatedBER alarm limit 6,4, port #,3,7 9.3.8 Factory settings 6,7 9.3.7 Default settings 6,69.3.6 Time slot use 6,5 In the Port/Line statistics submenu 9.4 Statistics9.5 User privileges 10.1 Dimensions 10 Technical specificationsTechnical specifications Issue 2-0 enPower consumption, depending on adapters and power supply used AC, DC 10.2 Power supplyAC power supply DC power supply10.4 Unit identification 10.3 Line interfaces10.5.1 Environmental and mechanical requirements 10.5 Ambient conditionsTechnical specifications 10.5.2 Electromagnetic compatibilityIssue 2-0 en Operating conditionsThe conditions listed in Section 5.1 must be fulfilled 10.5.3 Safety and protectionTable 25. General settings Appendix A A.1 Commissioning chartTable 26. Port settings Setting Table 26. Port settings ContinuedPort PortLine Issue 2-0 enPort PortNokia Corporation Issue 2-0 enDN01145897 Nokia Proprietary and ConfidentialGlossary Abbreviations Errored Seconds Ratio Power Terms