Nortel Networks BM450 manual Hardware Troubleshooting

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Chapter 3 Hardware Troubleshooting 35

•data bits: 8

•parity: N

•stop bits: 1

•no flow control

3Use a terminal emulation program, such as Hyperterminal or Nortel CLI Manager, to establish a connection to the BCM450.

4Reboot the system and observe the boot process. Figure 8 shows an example of a boot process when there is failed or missing memory; Figure 9 shows an example of a boot process when there is a failed or missing hard drive.

5If the system starts normally, the CLI login prompt displays when the boot cycle is complete.

BCM450 Troubleshooting Guide

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Contents BCM450 Troubleshooting Guide Copyright 2008 Nortel Networks, All Rights Reserved Task List BCM450 Troubleshooting GuideNN40160-700 Task ListContents Contents Chapter Advanced TroubleshootingChapter Understanding system messages Chapter Contacting Technical Support Organization IntroductionPurpose AudienceAcronym Description AcronymsIntroduction List of acronymsIntroduction List of acronyms Symbols and conventions used in this guide Related publications Introduction NN40160-700 Navigation Initial TroubleshootingProper installation and routine maintenance Network configurationLogical connections Device configuration informationInitial Troubleshooting Normal behavior on your networkInitial Troubleshooting Initial Troubleshooting NN40160-700 Check LED indicators Hardware TroubleshootingTroubleshooting the BCM450 hardware Check the power sourceSystem status LEDs states and descriptions Hardware TroubleshootingStatus Description LAN port LED locationsMBM LED descriptions Power Status DescriptionStatus Descriptions DTM LED functionsVerify the keycodes Check the wiring connectionsTo verify the keycodes using Element Manager Restart or shut down the system To verify the keycodes using TelsetFunction Description Impact Reset functionsTo restart the system Viewing the Post log file Power on self testHardware reset functions Example Bootloader.log file with no errors Testing basic hardware functionalityTo test the expansion unit To test the main unitTo troubleshoot the main unit To troubleshoot the expansion unit Testing an MBMTo determine why the ATA 2 does not function Determining why an MBM does not appear in Element ManagerTroubleshooting the FEM Reset to factory settings To determine why there is no dial tone at the ATA2To check the ATA2 wiring Reset levels To perform a Level 2 reset software reset Monitoring the boot processTo perform a Level 1 reset configuration reset Hardware Troubleshooting Boot process with failed or missing memory Check the programming of lines and phones Software TroubleshootingVerify the software version Verify the keycodesTrunk/Line data Software TroubleshootingCheck line programming To check line programmingSoftware Troubleshooting Trunk/Line Data main panel Sheet 2 Properties Software Troubleshooting Trunk/Line Data main panel Sheet 3Line must be equipped with disconnect supervision from Properties line settings Sheet 1Trunk mode Dia l modePreferences Software Troubleshooting Properties line settings Sheet 2Signaling Auto privacy Preferences details fields for lines Sheet 1Answer mode Restrictions RestrictionsAssigned DNs To restore data from an archiveRestoring system data Select Components to Restore panel opens To restore the factory configurationTo view the BCM450 software inventory Obtaining software updatesVerify the software inventory Viewing the inventory of BCM450 softwareTo obtain updates from the Nortel Technical Support Web Software Troubleshooting NN40160-700 Example 1 Cannot dial out from an analog trunk Advanced TroubleshootingTroubleshooting example Advanced Troubleshooting Example 2 Cannot dial out from a SIP or H323 VoIP trunk Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Example 3 IP set is not registering with the BCM450 Troubleshooting example 3b Troubleshooting example 3aAdvanced Troubleshooting Example 5 Cannot dial out from digital trunk Troubleshooting example Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Troubleshooting example Select Configuration Resources Telephony Resources System is not processing calls Recovery treesStart-up profile fails Recovery treesStart-up profile fails Cannot access BCM450 through Element ManagerCannot access BCM450 through Element Manager NN40160-700 BCM450 shuts down unexpectedly Unexpected shutdown BCM450 Troubleshooting GuideRecovery trees NN40160-700 Applications available on BCM450 web Application User Administrator User ApplicationsDownloading Software Downloading software from the BCM450 webpageDownloading Software Applications available on BCM450 web To download software from the BCM450 webpageDownloading Software Downloading software from the Nortel web siteDownloading Software NN40160-700 Status and Metrics Troubleshooting ToolsService Management Utilities Command Line InterfaceAccessing the CLI Troubleshooting ToolsUsing the Configuration CLI Accessing the CLI through a serial connectionAccessing the CLI through the OAM port Using the Maintenance CLI To set Release Reasons Alarms, logs, and trapsUnderstanding system messages Reporting for dropped callsUnderstanding system messages Release reasons Partner Bulletins Useful Troubleshooting LinksKnowledge and Solution Engine Using the Knowledge and Solution EngineUseful Troubleshooting Links To use the Knowledge and Solution EngineHow do I back up the database? Frequently Asked QuestionsBackup, restore, and reset operations To perform a backupFrequently Asked Questions How do I restore the BCM450 from a previous backup?To restore data from the BCM450 Recovering a lost password Password protectionCompleting a warm or cold reset How do I recover a lost password for the BCM450?To view an alarm Fault managementHow do I view Alarms? Can I acknowledge and clear them? How do I capture the logs from the BCM450? To acknowledge an alarmUsing the Element Manager to transfer log files System and status informationUsing the BCM450 Web Page to transfer log files Capturing the current configuration How do I capture the current BCM450 configuration?Viewing specific process states How do I find the BCM450 system health?Viewing the system health How do I show specific process states?Viewing the system ID and serial number Connectivity problemsVerify the current software revision How do find the BCM450 System ID and Serial Number?Can I modify the IP address of the OAM port? What is an Ethernet loop, and how do I avoid creating one?What are the default IP addresses of the BCM450 ports? IP addressesFrequently Asked Questions Frequently Asked Questions NN40160-700 Gathering critical information Contacting Technical SupportContacting Technical Support Getting help over the phone from a Nortel Solutions CenterGetting Help from the Nortel Web site Getting help through a Nortel distributor or reseller Contacting Technical Support NN40160-700