PD 6623:1999

PREFACE
          0.0.1 Title
          0.0.2 Normative Information
          0.0.3 Contents
          0.0.4 History
          0.0.5 Issue control
          0.0.6 References
          0.0.7 Glossary of terms
          0.0.8 Scope
    0.1 Introduction to PNO-ISC/SPEC/007
    0.2 Index of PNO-ISC/SPEC/007
    0.3 Other supplementary services
1 FUNCTIONAL DESCRIPTION (Q.761)
    1.1 Exceptions
2 GENERAL FUNCTION OF MESSAGES AND SIGNALS (Q.762)
    2.1 Exceptions
    2.2 Additions
          2.2.1 UK Specific Signalling Messages
          2.2.2 UK Specific Signalling Parameters
          2.2.3 Specific Parameter Information
3 FORMATS AND CODES (Q.763)
    3.1 Exceptions
    3.2 Additions
          3.2.1 Additional ITU-T Formats and Codes
          3.2.2 National Forward Call Indicators
          3.2.3 National Forward Call Indicators
                  (Link by link)
          3.2.4 Presentation Number
          3.2.5 Last Diverting Line Identity
          3.2.6 Partial Calling Line Identity
          3.2.7 Called Subscriber's Basic
                  Service Marks Parameter
          3.2.8 Calling Subscriber's Basic
                  Service Marks Parameter
          3.2.9 Calling Subscriber's Originating
                  Facility Marks
          3.2.10 Called Subscriber's Terminating
                  Facility Marks Parameter
          3.2.11 National Information Request
                  Indicators Parameter
          3.2.12 National Information Indicators
                  Parameter
          3.2.13 UK Parameter Compatibility
                  Information
4 SIGNALLING PROCEDURES (Q.764)
    4.1 Exceptions
    4.2 Additions
          4.2.1 ETSI additions
          4.2.2 UK modifications
5 SUPPLEMENTARY SERVICES, GENERAL (Q.730)
    5.1 Introduction
    5.2 Exceptions
6 USAGE OF CAUSE AND LOCATION (Q.850)
    6.1 Scope
    6.2 Exceptions
    6.3 UK Additions
          1.2.2 National Coding Standard
7 CONNECTED LINE IDENTIFICATION
    PRESENTATION/RESTRICTION (COLP/R)
    7.1 Introduction
    7.2 Exceptions to ITU-T recommendation Q.731
          Clause 5
    7.3 Exceptions to ITU-T recommendation Q.731
          Clause 6
8 CALLING LINE IDENTIFICATION
    PRESENTATION/RESTRICTION (CLIP/R)
    8.1 Introduction
    8.2 Exceptions to ITU-T recommendation Q.731
          Clause 3
    8.4 Replacement TABLE 3-1/Q.731
9 SPARE
10 NUMBER PORTABILITY (NP)
    10.1 Service overview
    10.2 Information Flows
    10.3 Formats And Codes
          10.3.1 Messages
          10.3.2 Parameters
    10.4 Signalling Procedures
          10.4.1 Actions at the Donor Network
          10.4.2 Actions at the Third Party Network
          10.4.3 Actions at the Recipient Network
          10.4.4 Message Sequence Diagram
11 COMPLETION OF CALLS TO BUSY SUBSCRIBER (CCBS)
    11.1 Introduction
    11.2 Exceptions
12 SPARE
13 SPARE
14 MALICIOUS CALL IDENTIFICATION (MCID)
    14.1 Introduction
    14.2 Formats and codes
    14.3 Signalling procedures
          14.3.1 Requesting Holding of connection
                  in conjunction with MCID
          14.3.2 MCID invoked during the active
                  phase of the call
          14.3.3 MCID invoked after calling user
                  initiated clear
          14.3.4 Called user initiates call
                  clearing without invoking MCID
    14.4 Parameter value
15 CALL FORWARDING UNCONDITIONAL (CFU)
    15.1 Introduction
    15.2 Service Overview
    15.3 Information Flows
    15.4 Formats And Codes
    15.5 Signalling Procedures
    15.6 Interworking with IUP
16 CALL FORWARDING NO REPLY (CFNR)
    16.1 Introduction
    16.2 Service Overview
    16.3 Information Flows
    16.4 Formats and Codes
    16.5 Signalling Procedures
    16.6 Interworking with IUP
17 CALL FORWARDING BUSY (CFB)
    17.1 Introduction
    17.2 Service Overview
    17.3 Information Flows
    17.4 Formats and Codes
    17.5 Signalling Procedures
    17.6 Interworking with IUP
18 CALL FORWARD ON SUBSCRIBER NOT REACHABLE (CFNRC)
    18.1 Introduction
    18.2 Formats and Codes
    18.3 Signalling Procedures
          18.3.1 Activation/deactivation/registration
          18.3.2 Invocation and operation
    18.4 Examples of Signalling Procedures
    18.5 Interworking with IUP
19 EXPLICIT CALL TRANSFER (ECT)
    19.1 Introduction
    19.2 Formats and Codes
    19.3 Signalling Procedures
          19.3.1 Loop Prevention Procedure
          19.3.2 Loop Prevention Procedure -
                  Interworking Node Actions
20 NO RING CALL (RESERVED)
21 NNI EXTENSIONS TO SUPPORT PSS1 INFORMATION FLOWS
    21.1 Introduction
    21.2 Exceptions
22 VPN SUPPORT - OTHER (DPNSS) (RESERVED)
23 OPERATOR SERVICES
    23.1 Introduction
    23.2 Service Overview
    23.3 Information Flows
    23.4 Formats and Codes
    23.5 Procedures
          23.5.1 Basic Service
          23.5.2 Enhanced Service
          23.6.1 Operator Override
          23.6.2 Interception Services
Appendix 23.A - CODING REQUIREMENTS
Appendix 23.B - INTERWORKING REQUIREMENTS
24 APPLICATION TRANSPORT MECHANISM
    24.1 Introduction
    24.2 Exceptions
25 SPARE
26 CALL DEFLECTION
    26.1 Introduction
    26.2 Service Overview
    26.3 Information Flows
    26.4 Formats And Codes
    26.5 Signalling Procedures
    26.6 Interworking With IUP
27 TARGETED TRANSIT
    27.1 Introduction
    27.2 Formats and Codes
          27.2.1 Messages
          27.2.2 Parameters
    27.3 Signalling Procedures
          27.3.1 Actions at the Originating Network
          27.3.2 Actions at the Transit Network
          27.3.3 Actions at the Targeted Network
          27.3.4 Message Sequence Diagram

Defines the ISUP protocol required for the national interface between public network operators in the UK.