PD 6639:2001

0 PREFACE
  0.1 Title
  0.2 Normative Information
  0.3 Contents
  0.4 History
  0.5 Issue Control
  0.6 References
  0.7 Abbreviations
  0.8 Scope
1 GENERAL
2 THE FORM OF THE REQUIREMENTS
3 MANDATORY REQUIREMENTS WHERE STP WORKING APPLIES
  3.1 Treatment of receiver Level 2 signal units which
        are not understood
  3.2 Treatment of Spare Bits and Additional Fields in
        Level 3 received Messages
  3.3 Point Code Allocation
  3.4 Message Length
  3.5 Digital Bearers Derived from Multiplexes other than
        2048kbit/s
  3.6 Bit Rate of Analogue Signalling Data Links
  3.7 Use of the Length Indicator
  3.8 Flags
  3.9 Repetition of Signal Units
  3.10 Error Correction Procedure
  3.11 Processor Outage
  3.12 Threshold for Error Rate Monitor
  3.13 Time-out Values
  3.14 Signalling Network Management
  3.15 Routing of Messages
  3.16 Load Sharing Among Linksets
  3.17 The Number of Links in a linkset
  3.18 Bit Rates of Links within a Linkset
  3.19 Load Sharing within a Linkset
  3.20 Signalling Route Availability
  3.21 Signalling Network Congestion
  3.22 Signalling Link Unavailability
  3.23 Signalling Point Restart
  3.24 Management Inhibiting
  3.25 Congestion Procedures
  3.26 Link Management Procedures
  3.27 Initial Testing of Signalling Links on Activation
        and Restoration
  3.28 Automatic Allocation of Signalling Data Links
  3.29 Allocation of Service Indicator Codes
  3.30 Signalling Network Management Messages
  3.31 Allocation of Signalling Link Codes
  3.32 Signalling Traffic Throughput
  3.33 Message Transfer Times
  3.34 Monitoring and Measurements
4 MANDATORY REQUIREMENTS WHERE STP WORKING DOES NOT APPLY
  4.14 Signalling Network Management
  4.15 Routing of Messages
  4.30 Signalling Network Management Messages