GR 606 CORE : ISSUE 6

Preface
1 Overview
      1.1 Reasons for Reissue
      1.2 CCS Network Access
      1.3 Signaling System Number 7 Protocol
      1.4 Multiple Point Code Capability
2 Signaling Link Characteristic
      2.1 Description of Signaling Data Links
      2.2 Synchronization Requirements for DSOA Interfaces
              2.2.1 Composite Clock Redundancy Requirements
              2.2.2 Composite Clock Robustness Requirements
      2.3 SS7 Signal Units
      2.4 Error Detection and Recovery
      2.5 Signal Unit Error Monitoring
      2.6 Signaling Link Initial Alignment
      2.7 Processor Outage
      2.8 Signaling Link Busy
      2.9 Link Performance
      2.10 False Link Congestion Detection
3 Message Signal Unit Information Handling
      3.1 Routing Label Information
      3.2 Message Discrimination and Distribution
      3.3 Message Routing
              3.3.1 Back-up Routing Procedures
      3.4 Loadsharing
      3.5 Message Sequencing
4 Signaling Network Management
      4.1 Signaling Link Activation
      4.2 Signaling Link Changeover
      4.3 Signaling Link Changeback
      4.4 Forced Rerouting
      4.5 Controlled Rerouting
      4.6 MTP Restart
              4.6.1 Overview of the MTP Restart Procedures
              4.6.2 Requirements for a Restarting SPCS
              4.6.3 Requirements for an SPCS Adjacent to a
                        Restarting Node
              4.6.4 Receipt of an Unexpected TRW/TRA Message
              4.6.5 General Requirements
      4.7 Management Inhibiting
              4.7.1 Signaling Link Inhibiting
              4.7.2 Signaling Link Uninhibiting
      4.8 Message Priorities and Congestion Control
      4.9 Signaling Route Management
              4.9.1 Transfer-Prohibited
              4.9.2 Transfer-Cluster-Prohibited
              4.9.3 Transfer-Allowed
              4.9.4 Transfer-Cluster-Allowed
              4.9.5 Transfer-Restricted
              4.9.6 Transfer-Cluster-Restricted
              4.9.7 Signaling-Route-Set-Test Procedures
              4.9.8 Transfer Controlled
              4.9.9 Signaling-Route-Set-Congestion-Test
      4.10 Signaling Link Tests
      4.11 MTP User Flow Control
5 Noncircuit-Related Information Exchange - SCCP
      5.1 SCCP Protocol Class
      5.2 Connectionless Signaling Procedures
              5.2.1 SCCP Message Return
      5.3 SCCP Segmentation and Reassembly
              5.3.1 Segmenting
                        5.3.1.1 Segmentation Criteria
                        5.3.1.2 Segmentation Procedures
              5.3.2 Reassembling
                        5.3.2.1 Initiating a Reassembly Process
                        5.3.2.2 Reassembly Procedures
      5.4 SCCP Management
6 Additional Procedures for SPCS-to-SPCS/SCP TCAP Messages
      6.1 Scope and Applicability
      6.2 Definitions
      6.3 Overview
      6.4 The Analysis Processing Units
      6.5 Formatting and Coding Requirements
      6.6 Requirements for Feature Override
      6.7 Treatment Processing Summary
      6.8 Administrative Data
      6.9 Error Procedures
7 Circuit-Related Information Exchange
8 SPCS Capacity
9 Performance
      9.1 General Considerations
      9.2 Service (All Causes) Downtime Objectives
              9.2.1 SPCS Total System Downtime
              9.2.2 SPCS Link Downtime
      9.3 Hardware Downtime Requirements
              9.3.1 Predicted SPCS Total System Downtime
              9.3.2 Predicted SPCS Link Downtime
Appendix A: SS7 Message Formatting Guidelines
    A.1 Basic Principles
    A.2 Signal Unit Encoding
    A.3 Message Signal Unit Routing Label
    A.4 Signaling Network Management Message Formats
              A.4.1 Changeover Messages
              A.4.2 Emergency Changeover Messages
              A.4.3 Changeback Messages
              A.4.4 Management Inhibit Messages
              A.4.5 Transfer Prohibited/Restricted/Allowed
                        Messages
              A.4.6 Signaling-Route-Set-Test Messages
              A.4.7 Transfer Controlled Message
              A.4.8 Signaling-Route-Set-Congestion-Test-Message
              A.4.9 Traffic Restart Message
              A.4.10 Signaling Link Test Messages
              A.4.11 User Part Unavailable Message
    A.5 Circuit-Related Message Format
    A.6 Noncircuit-Related Message Formats
              A.6.1 SCCP Interfaces to SCCP-User Parts
              A.6.2 Unitdata and Extended Unitdata Messages
              A.6.3 Additional Information to Support Routing
                        of TCAP Messages
              A.6.4 SCCP Management
              A.6.5 Non-circuit Related Service Messages
              A.6.6 Extended Unitdata Service Messages
Appendix B: SPCS Internal Congestion Control
    B.1 Background
    B.2 Guidelines Based on Processing Priority
              B.2.1 Internal SPCS Processing Priority Classes
              B.2.2 Internal SPCS Congestion Thresholds
              B.2.3 Treatment During Internal SPCS Congestion
    B.3 Guidelines Based on Automatic Gapping
              B.3.1 Internal SPCS Congestion Thresholds
              B.3.2 Treatment During Internal SPCS Congestion
Appendix C: Technical Description of ISNI
    C.1 Introduction
    C.2 Motivation
              C.2.1 Definitions
    C.3 ISNI Capability
              C.3.1 Notification Function
              C.3.2 Routing Function
              C.3.3 SCCP ISNI Parameter
    C.4 Message Routing
              C.4.1 Message Routing With SCCP ISNI
    C.5 Summary
Appendix D: Test Considerations for GRP
    D.1 Introduction
    D.2 Test Configuration
    D.3 Treatment Analysis Tests
              D.3.1 Initial TCAP Message Tests
              D.3.2 Subsequent TCAP Message Tests
    D.4 ICN Identity Analysis Tests
              D.4.1 Initial TCAP Message Tests
              D.4.2 Subsequent TCAP Message Tests
    D.5 Routing Data Analysis Tests
              D.5.1 Routing Data Analysis for Treatment 2
              D.5.2 Routing Data Analysis for Treatment 3
    D.6 Override Tests
              D.6.1 Treatment Override Tests
              D.6.2 ICN Identity Override Tests
              D.6.3 Destination Point Code (DPC) Override Tests
    D.7 Administrative Data Tests
    D.8 Error Procedures Tests
Appendix E: Operations Requirements for Section 6.5
    E.1 Introduction
    E.2 Memory Administration Requirements
              E.2.1 General
              E.2.2 Memory Administration Requirements for
                        MTP Restart
              E.2.3 Memory Administration Requirements for
                        False Link Congestion Detection
              E.2.4 Memory Administration Requirements for a
                        Full Transmit Buffer
              E.2.5 Memory Administration Requirements for E-Links
              E.2.6 Memory Administration Requirements for
                        SCCP Segmentation
              E.2.7 Memory Administration Requirements for
                        SPCS-to-SPCS/SCP TCAP Messages
              E.2.8 Memory Administration Requirements to Support
                        the Multiple Point Code Capability
              E.2.9 Memory Administration Requirements for
                        Unrecognized SCCP Messages
              E.2.10 Memory Administration Requirements for
                        Connectionless Signaling Procedures
    E.3 Surveillance Requirements
              E.3.1 Event Notification Requirements
              E.3.2 Surveillance Measurement Requirements
    E.4 Traffic Measurement Requirements
              E.4.1 General
              E.4.2 Traffic Measurement Requirements for MTP
                        Restart
              E.4.3 Traffic Measurement Requirements for
                        False Link Congestion Detection
              E.4.4 Traffic Measurement Requirements for a
                        Full Transmit Buffer
              E.4.5 Traffic Measurement Requirements for E-Links
              E.4.6 Traffic Measurement Requirements for
                        SCCP Segmentation
              E.4.7 Traffic Measurement Requirements
                        SPCS-to-SPCS/SCP TCAP Messages
              E.4.8 Traffic Measurement Requirements to Support
                        the Multiple Point Code Capability
              E.4.9 Traffic Measurement Requirements for
                        Unrecognized SCCP Messages
              E.4.10 Traffic Measurement Requirements to
                        Support Connectionless Signaling Procedures
References
Glossary

Describes MTP Restart requirements to clearly state that Traffic Restart Allowed (TRA) messages are expected to be received from nodes that are available on directly accessible link sets.