PD 6627:2001

0.3 Contents
 0 PREFACE
  0.1 Title
  0.2 Normative Information
  0.3 Contents
  0.4 History
  0.5 Issue Control
  0.6 References
  0.7 Glossary of Terms
   0.7.1 Abbreviations
   0.7.2 Terminology
 1 INTRODUCTION
 2 REQUIREMENTS ON APPLICATIONS MAKINGS
         USE OF SCCP
  2.1 SCCP Return Message on Error
         Procedure
  2.2 SCCP Calling and Called Addresses
         Structure
   2.2.1 Address Indicator (Octet)
   2.2.2 Global Title Contents
   2.2.3 Routing Indicator
  2.3 Management of Address Information by
         the Transaction Capability Sub-Layer
  2.4 Protocol Class
  2.5 Sequence Information
  2.6 Quality of Service
  2.7 Stream Identity
  2.8 SCCP User Management
   2.8.1 N-STATE Primitive
   2.8.2 N-PCSTATE Primitive
   2.8.3 N-COORD Primitive
 3 REQUIREMENTS ON SCCP NETWORKS
  3.1 Use of the Return Option
   3.1.1 Incomplete Routing
   3.1.2 Replicated Subsystems
   3.1.3 Changes to Calling and Called Party
         Addresses
   3.1.4 Scope of Calling Party Address
   3.1.5 Calling Party Addresses in UDTS
         Messages
   3.1.6 Conversion of Called Party Address
   3.1.7 Syntax Checks
  3.2 Corrective Action for Message Returned
         on Error Reasons
  3.3 Checking for Ported Numbers in Own
         Node or Network
  3.4 Checking for Circular Routing of
         Messages to Ported Numbers
  3.5 Management of SCCP
 4 REQUIREMENTS OF SPECIFIC SERVICES
         USING SCCP
  4.1 UK Interconnect
   4.1.1 Sub System Number and Point Code
   4.1.2 E.164 Address Format
  4.2 SCCP Support for Geographic, Non
         Geographic and Personal Number
         Portability
   4.2.1 Donor Relay of SCCP Messages
   4.2.2 Format of Address Indicator and
         Address
  4.3 SCCP Support for CCBS Supplementary
         Service
   4.3.1 E.164 Service Centre Address
   4.3.2 CCBS CPN to Ported Numbers
   4.3.3 Transaction Capabilities (TC)
         Resources
   4.3.4 Format of Address Indicator and
         Address
  4.4 SCCP Support for Mobile Number
         Portability (MNP)
   4.4.1 Signal Relay Function Addressing
   4.4.2 Format of Address Indicator and
         Address
  4.5 ETSI INAP
 5 CLARIFICATIONS OF SPECIFIC MTP AND
         SCCP CLAUSES
 6 SUMMARY OF SCCP & MTP PARAMETER
         ASSIGNMENTS
  6.1 SCCP Parameters
   6.1.1 SCCP Rerun Option
   6.1.2 Routing Indicator
   6.1.3 Subsystem Number (SSN)
   6.1.4 Global Title Format for Indicator
         0100 (GTI=4)
  6.2 MTP Parameters
   6.2.1 Allocation of Service Indicator
         Codes
   6.2.2 Service Indicators for UPU Messages
 7 GUIDE TO MTP NETWORK INTERCONNECTION
  7.1 MTP Use of Signalling Transfer Points
         (Quassi Associated Signalling)
   7.1.1 Associated Signalling
   7.1.2 Quasi Associated Signalling
   7.1.3 STP Network Architectures
   7.1.4 Factors to be Taken Into Account When
         Using STPs
   7.1.5 Different Network Architectures
   7.1.6 Circuit Related and Non-Circuit Related
         Signalling
   7.1.7 Recommendations
  7.2 MTP Congestion Handling
   7.2.1 Introduction to Congestion Procedures
   7.2.2 How Signalling Link Congestion Occurs
         and the Impacts
   7.2.3 Levels of Congestions
   7.2.4 Parameters that Control Congestion
   7.2.5 How to Determine the Values
   7.2.6 Link Set Capacity
   7.2.7 ITU-T Implementors Guide
   7.2.8 Nodal Congestion
   7.2.9 SCCP Reaction to MTP Congestion
   7.2.10 Fault Handling During Signalling Link
          Congestion
  7.3 MTP Restart Procedures
   7.3.1 Network Options
   7.3.2 Q.704 07/96 MTP Restart Procedures
   7.3.3 UK Interconnect Use of MTP Restart
   7.3.4 Interworking Red Book and 07/96
         Restart Procedures
   7.3.5 Timer Values and Parameter Settings
  7.4 MTP Policing
  7.5 Signalling Network Management
         Correlation
 8 GUIDE TO SCCP NETWORK INTERCONNECTION
  8.1 Background Information
  8.2 Options Available
   8.2.1 Options At SCCP Level
   8.2.2 Options at MTP Level
   8.2.3 Options at the Physical Level
  8.3 Assessment of Options
   8.3.1 SCCP points of Interconnect
   8.3.2 MTP Points of Interconnect
   8.3.3 Physical Points of Interconnect
 9 CONSIDERATIONS IN CHOOSING AN SCCP
         ARCHITECTURE OPTION
  9.1 Network Integrity
  9.2 Reliability of Interconnect
  9.3 Capacity and Performance Requirements
   9.3.1 Signalling Link Capacity
   9.3.2 Processor Capacity
   9.3.3 Signalling Delays
  9.4 Capital Costs
   9.4.1 Signalling Links
   9.4.2 Processor Capacity
   9.4.3 Transmission Capacity
   9.4.4 Routing Data Capacity
  9.5 Current Account Costs
   9.5.1 Signalling Link Capacity Management
   9.5.2 Processor Capacity Management
   9.5.3 Transmission Capacity Management
   9.5.4 Routing Data Management
  9.6 Recommendations
10 INTERWORKING ISSUES
  10.1 Interworking Issues Between UK and
         ESTI MTP
   10.1.1 Preventive Cyclic Retransmission
   10.1.2 MTP Restart
  10.2 SCCP Interworking Issues

This standard mainly covers provision and use of the interconnect SCCP. This standard also provides information relating to the MTP and also covers the impacts and issues regarding the interconnect of MTP networks.