Nortel Networks R2MFC manual Alarms Measurements

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64 Chapter 6 R2MFC MBM maintenance

Alarms

Performance is monitored on both the internal (PRI) and external (MFC) links, but the actions when errors occur are different. Alarms and events handling include three types of actions:

1Propagating Alarms:

a Alerts the far-end by transmitting remote alarm indication (RAI). b Passes alarm conditions from link to link.

2Reflecting alarm conditions on faceplate LEDs

3Printing to error logs

Alarms Measurements

This section describes the mechanism and terminology of alarms measurements, and the actions taken when alarms occur or stop. Several performance indicators are monitored in order to detect

E1 signal degradation; these indicators are categorized into two groups:

•Group I errors: These are events that can be counted, and are not continuous conditions. The number of events is counted, and is compared with thresholds (number of events in a specific time interval) used to evaluate the severity of the alarm condition.

•Group II errors: These are continuous conditions. These indicators can turn on and off rapidly, or they can remain on or off.

Each group of performance indicators are handled differently.

Group I errors

Each error has two thresholds of error rate, which defines two levels of error severity:

•Maintenance — error exists but acceptable (service available)

•Out Of Service (OOS) — severe error (service not available)

Group I errors are the following:

1Bipolar Violations (BPV) — Errors in the bits coding.

2Frame Bit Error (FBER) — Errors in the frame alignment word.

3SLIPs — The replication or deletion of the 256 payload bits of an E1 frame. This error indicates that the local E1 clock is not synchronized with the far end.

4CRC-4 errors — Received CRC code is not identical to a locally calculated code. This alarm is only relevant when in CRC-4.

5Far-end block error (FEBE) — Far end has detected a CRC-4 error. This alarm is only relevant when in CRC-4.

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Contents R2MFC Media Bay Module Installation and Configuration Guide Safety North American Regulatory InformationR2MFC Media Bay Module Installation and Configuration Guide Enhanced 911 ConfigurationRadio-frequency Interference Important Safety Instructions Hearing Aid CompatibilityRepairs NN40010-300International Regulatory Information NN40010-300 Contents Chapter Preparing to install the R2MFC MBM Chapter R2MFC MBM maintenance Appendix a Configuring DIP switch settings and definitions MFC Register Signaling Panama Config 1 NN40010-300 How to Get Help Getting Help over the phone from a Nortel Solutions CenterGetting Help from the Nortel Web site Getting Help through a Nortel distributor or resellerHow to Get Help NN40010-300 About this guide Getting startedAudience Before you begin AcronymsSymbols and text conventions Pswd Convention Example Used forRelated publications Getting started NN40010-300 Chapter Overview General informationR2MFC MBM faceplate elements Administration and maintenance toolsOverview Config DIP switches System Status LEDsBNC and RJ-48 connectors R2MFC MBM back and underside elementsRS232 port E1 Status LEDsPower connectors MBM DIP switchesOverview NN40010-300 Chapter Preparing to install the R2MFC MBM Installation process map Host system setup requirementsPreparing to install the R2MFC MBM Host system setup requirementsR2MFC MBM setup requirements Config DIP switchesCustomer supplied hardware requirements Chapter Installing the R2MFC MBM Overview of the R2MFC MBM installationShutting down the system Installing the R2MFC MBMShutting down a BCM 4.0 system Shutting down a BCM 3.7 or lower system Shutting down the BCM 4.0 system hardwareInstalling an R2MFC MBM Installing an R2MFC MBM in the BCM platform base chassisInstalling an R2MFC MBM in the expansion unit Installing an R2MFC MBM in the BCM50 expansion unit Installing the rubber boot in an R2MFC moduleR2MFC Transmit Co-axial cable connected to the MBM Reconnecting the equipment Removing an R2MFC MBMHow to remove a BCM200 R2MFC MBM Removing an R2MFC MBM from the BCM platform base chassisHow to remove a BCM400 R2MFC MBM Removing an R2MFC MBM from the expansion unitWiring an R2MFC MBM How to remove the expansion unit front bezelInstalling the R2MFC MBM Connecting an R2MFC MBM to a service provider Trunk wiring overviewInstalling the R2MFC MBM Chapter Configuring the R2MFC MBM Configuring the R2MFC MBMPhysical line characteristics MFCR2 side External Link configurable parametersE1 framing Line signaling Register signalingMinimum or fixed number length + timer parameters Option Parameters Meaning DefaultConfiguring the MFCR2 external link Setting Config DIP switchesConfig DIP switch layout Creating a customized country codePRI side Internal Link configurable parameters E1 framing default parametersConfiguring the PRI internal link SignalingConfiguring the PRI internal link using Element Manager Layer 2 signaling parametersModule configuration parameters Parameter SettingConfiguring the PRI internal link using Unified Manager BCM lines configuration for R2MFC MBMModule type BCM module configuration for R2MFC MBM Off Turning on second dial tone using Element Manager Turning on second dial toneTurning on second dial tone using Unified Manager Outgoing dialing configuration for second dial toneConfiguring the R2MFC MBM Chapter R2MFC MBM maintenance Inter-working functionalityClock synchronization R2MFC MBM maintenanceTranslation of Subscriber Status Diagnostic tools Setting the R2MFC MBM to diagnostic modeDiagnostic and loopback modes Mode Description Call AvailabilityAlarms Alarms MeasurementsAlarms propagation Incoming signal errorsGroup I Alarms propagation Sheet 1 Alarm CauseR2MFC MBM maintenance Group I Alarms propagation Sheet 2 Group II alarms propagationFaceplate LEDs System status monitor LEDsError messages Logs and tracesLED Name Yellow LED Red LEDOverview of module replacement process Replacing an R2MFC MBMUpgrading firmware Hyper-terminal setup parameters Connect usingProgram responds starting rec 0. Hit any key to continue R2MFC MBM maintenance NN40010-300 Users and passwords Chapter Command Line Interface CLIOverview Accessing the CLI Command Line Interface CLICommands LOad directory CLI commandsINfo directory CLI commands LOad directoryVIew directory CLI commands VIew directoryCNtrl directory CLI commands Sheet 1 CNtrl directoryNN40010-300 CNtrl directory CLI commands Sheet 3 COnfig directoryCOnfig directory CLI commands Sheet 1 NN40010-300 ALarm directory ALarm directory CLI commands Sheet 1NN40010-300 SWerr directory CLI commands SWerr directoryMFC directory CLI commands Sheet 1 MFC directoryMFC directory CLI commands Sheet 2 See Chapter , MFC Signal Definitions, on page 111 for MFC R2 directory CLI commands Sheet 1 R2 directoryCommand Line Interface CLI R2 directory CLI commands Sheet 2 PRI directory CLI commands PRI directoryCommand Line Interface CLI NN40010-300 Appendix a Configuring DIP switch settings and definitions Shows the Config DIP switch layoutCountry selection DIP switch settings Second dial tone DIP switch settingsMexico Config Country code defaultsMexico Config 1 R2 A/B signals Interpretation of transmitted MFC signals Sheet 1 Interpretation of received MFC signalsMeaning Signal Mexico Config Mexico Config 2 R2 A/B signals Interpretation of received MFC signals Sheet 1Interpretation of transmitted MFC signals Brazil Config Brazil Config 1 R2 A/B signalsInterpretation of received MFC signals Brazil Config Brazil Config 2 R2 A/B signals Argentina Config Argentina Config 1 R2 A/B Signals Interpretation of received MFC signals Chile Config Chile Config 1 R2 A/B signalsSignal Block Panama Config Configuring DIP switch settings and definitions NN40010-300 Appendix B Diagnostic and loopback DIP switch settings Diagnostics and Loopback Dip Switch SettingsDiagnostic and loopback DIP switch settings NN40010-300 MFC signal definitions Appendix C MFC Signal DefinitionsMFC signal meaning MFC Signal Definitions NN40010-300 Appendix D CLI Cable Pinout Cable pinoutsCLI Cable Pinout NN40010-300