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GR 474 CORE : ISSUE 2

Current

Current

The latest, up-to-date edition.

NETWORK MAINTENANCE: ALARM AND CONTROL FOR NETWORK ELEMENTS

Published date

12-01-2013

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1. Introduction
    1.1 Relationship to other Bellcore Technical Documents
    1.2 Purpose of Issue 1 and Changes from TR-NWT-000474
    1.3 Scope of Document
    1.4 Overview of Surveillance-Based Maintenance
    1.5 TMN Perspective
    1.6 Organization of Document
    1.7 Requirements Terminology
    1.8 Requirements Labeling Conventions
          1.8.1 Numbering of Requirement and Related Objects
          1.8.2 Requirement, Conditional Requirement, and Objective
                  Object Identification
2. Criteria Common to Switching and Transport NEs
    2.1 Trouble Detection
    2.2 Trouble Notification
          2.2.1 Types of Trouble Notifications
          2.2.2 General Message Criteria for Trouble Notifications
          2.2.3 Alarmed Trouble Notification Severity
          2.2.4 CO Alarm Subsystem
          2.2.5 Alarmed Indication Signal
          2.2.6 Synchronization
    2.3 Service Recovery
          2.3.1 Manual Service Recovery
    2.4 Trouble Verification
    2.5 Trouble Isolation
          2.5.1 Manual Maintenance Actions
    2.6 Repair
    2.7 Maintenance Person - NE Interface
          2.7.1 Centralization of Maintenance Functions
          2.7.2 Common Physical Control/Status Interface Criteria
          2.7.3 Maintenance Documentation
3. Criteria for Switching System NEs
    3.1 Trouble Detection
          3.1.1 Trouble Detection Tests
          3.1.2 Other System Strategies for Trouble Detection
          3.1.3 Trouble Detection Inhibiting
    3.2 Trouble Notification
          3.2.1 General Message Criteria for Trouble Notifications
          3.2.2 Alarmed Trouble Notification Severity
          3.2.3 CO Alarm Subsystem
    3.3 Service Recovery
          3.3.1 Automatic Service Recovery
          3.3.2 Manual Service Recovery
          3.3.3 Hardware Redundancy
    3.4 Trouble Verification
          3.4.1 Periodic Automatic Verification
          3.4.2 Demand Verification Capabilities
    3.5 Trouble Isolation
          3.5.1 Trouble Isolation Procedure
          3.5.2 Fuse Trouble Isolation
          3.5.3 Diagnostic Raw Data Report
          3.5.4 Error Analysis
    3.6 Repair
          3.6.1 OOS State Criteria
          3.6.2 Assurance of OOS before Repair
          3.6.3 Power Removal before Repair
          3.6.4 Physical Repair
          3.6.5 Restoration of Equipment to Active or Standby State
          3.6.6 Mean Time to Repair
    3.7 Maintenance Person - NE Interface for Switching NEs
          3.7.1 Switching System Centralization of Maintenance
                  Functions
          3.7.2 Switching System Physical Control/Status Interface
                  Criteria
          3.7.3 Switching System Maintenance Messages Interface
          3.7.4 Changes and Verifications to Switching System
                  Software
          3.7.5 Voice Communications
          3.7.6 Extended Maintenance Capabilities (Beltline)
          3.7.7 Physical Design for Maintenance
4. CS NE Generic Requirements
    4.1 Trouble Detection
    4.2 Trouble Notification
          4.2.1 Output Message Categories
    4.3 Service Recovery
    4.4 Trouble Verification
    4.5 Trouble Isolation
    4.6 Repair
          4.6.1 Software Repair
    4.7 CS Maintenance-Person - NE Interface
5. PS NE Generic Requirements
    5.1 Trouble Detection
    5.2 Trouble Notification
    5.3 Service Recovery
          5.3.1 Automatic Treatment of Faults
          5.3.2 Automatic Escalating Levels of PS Initializations
    5.4 Trouble Verification
    5.5 Trouble Isolation
    5.6 Repair
          5.6.1 Software Repair
    5.7 PS Maintenance-Person - NE Interface
          5.7.1 PS Centralization of Maintenance Functions
          5.7.2 PS Physical Control/Status Interface Criteria
          5.7.3 Maintenance USI Device Criteria
          5.7.4 Remote I/O Message Capability
6. CCS Generic Requirements for Switching NEs
    6.1 Trouble Detection
          6.1.1 Trouble Detection Speed and Impact on Service
          6.1.2 Trouble Detection Strategy Order
    6.2 Trouble Notification
          6.2.1 Alarm Classification
          6.2.2 Hourly Status Message Report
    6.3 Service Recovery
          6.3.1 Automatic Service Recovery
          6.3.2 Hardware Redundancy
    6.4 Trouble Verification
    6.5 Trouble Isolation
    6.6 Repair
    6.7 CCS Maintenance Person - NE Interface
          6.7.1 CCS Centralization of Maintenance Functions
          6.7.2 CCS Physical Control/Status Interface Criteria
7. ISDN Switch Generic Requirements
    7.1 Trouble Detection
          7.1.1 Physical, Data Link, and Network Layer Surveillance
          7.1.2 Intraswitch Path Error Analysis and Diagnosis
    7.2 Trouble Notification
          7.2.1 Service-Affecting Resources
    7.3 Trouble Verification, Isolation, and Repair Verification
          7.3.1 Call Trace
          7.3.2 Testing
          7.3.3 Embedded Operations Channels
8. Criteria for Transport NEs
    8.1 Trouble Detection
    8.2 Trouble Notification
          8.2.1 Multiplying of Trouble Notifications
          8.2.2 Alarmed Trouble Notification Severity
          8.2.3 Telemetry Trouble Notifications
          8.2.4 Line Equipment Requirements
          8.2.5 Path Equipment Requirements
          8.2.6 Failure of Processor-Based Controller
    8.3 Service Recovery
          8.3.1 Trouble Notifications for Protection Switches
          8.3.2 Failure of Protection Switching Equipment
          8.3.3 Inhibition of Protection Switching
          8.3.4 Completion of Protection Switching
    8.4 Trouble Verification
    8.5 Trouble Isolation
    8.6 Repair
          8.6.1 Local Output
          8.6.2 Maintaining Service During Repair
References
Glossary
List of Figures
1-1. Where Trouble Indications Appear
1-2. TMN Layers and MFAs Addressed

Gives the requirements that pertain to the Fault and Performance Management functions in transport and switching Network Elements (NEs) used for alarm surveillance and control.

DevelopmentNote
Replaces TR NWT 000474 and TR TSY 000509. Included in FR 439. (04/2001) Supersedes TA TSY 000372. (03/2004) Supersedes TA NWT 000472. (07/2004)
DocumentType
Standard
PublisherName
Telcordia Technologies
Status
Current
Supersedes

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