TR NWT 000444 : ISSUE 3

1 INTRODUCTION
1.1 REQUIREMENTS TERMINOLOGY
1.2 DEFINITION
1.3 BACKGROUND
1.4 HIGH LEVEL DESCRIPTION
2 USER PERSPECTIVE
3 FEATURE REQUIREMENTS
3.1 FEATURE OPERATIONS
3.1.1 Main Feature Operations
3.1.1.1 ISDN Call Establishment; Originating Exchange
3.1.1.2 Call Establishment; Intermediate Exchange
3.1.1.3 Call Establishment; Terminating Exchange
3.1.1.4 Continuity Check Procedures
3.1.1.5 Completion of Transmission Path
3.1.1.6 The Address Complete Message (ACM)
3.1.1.7 The SS7 Call Progress Message (CPG)
3.1.1.8 The Answer Message (ANM)
3.1.1.9 Called Party Busy (Network Determined)
3.1.2 Other Feature Operations
3.1.2.1 Unrecognized Messages; The Confusion Message (CFN)
3.1.3 Release Treatment
3.1.3.1 General Release Procedures
3.1.3.2 Release at Originating ISDN Interface
3.1.3.3 Release at an Intermediate Exchange
3.1.3.4 Release at Terminating ISDN Interface
3.1.4 Error Treatment and Abnormal Events
3.1.4.1 Unsuccessful Call Completion At Tandem and
             Terminating Exchanges
3.2 INTERNAL CALL PROCESSING CONTROLS
3.2.1 Screening
3.3 ADMINISTRATION
3.3.1 Data Items and Usage
3.4 MAINTENANCE
3.5 INTERACTIONS
3.5.1 ISDN SS7 Incoming Circuit, Inband Signaling On
             Outgoing Circuit
3.5.1.1 Call Establishment
3.5.1.2 Connection Release
3.5.2 Inband Signaling On Incoming Circuit, ISDN SS7
             Outgoing Circuit
3.5.2.1 Call Establishment
3.5.2.2 Connection Release
3.6 TIMING AND TOLERANCES
4 GLOSSARY
REFERENCES
APPENDIX A: SS7 MESSAGES
APPENDIX B: SS7 PARAMETERS
Appendix C: Message Flow Diagram
Appendix D: Mappings Between Q.931 Information Elements and SS7
             Parameters
List of Tables
Table 3-1 Bit Transmission Order
Table 3-2 Coding Rules for the Called Party Number Parameter
Table 3-3 Type of Number and Numbering Plan; Q.931 -> SS7 CPN
Table 3-4 Origin of Number and Presentation Status;
             Access -> SS7 CPN
Table 3-5 Type of Number and Numbering Plan; Q.931 -> SS7 GAP
Table 3-6 Origin of Number and Presentation Status;
             Access -> SS7 GAP
Table 3-7 Type of Number and Numbering Plan; Q.931 (First or
             Only) RNIE -> SS7 OCN at Originating SPCS
Table 3-8 Origin of Number and Presentation Status; Q.931
             (First or Only) RNIE -> SS7 OCN at Originating SPCS
Table 3-9 Type of Number and Numbering Plan; Q.931 (Second)
             RNIE -> SS7 RN at Originating SPCS
Table 3-10 Origin of Number and Presentation Status; Q.931
             (Second) RNIE -> SS7 RN at Originating SPCS
Table 3-11 Responses to Sending IAM
Table 3-12 Nature of Address and Numbering Plan; SS7 CPN
             -> Q.931
Table 3-13 Presentation and Screening Coding; SS7 CPN -> Q.931
Table 3-14 Nature of Address and Numbering Plan; SS7
             GAP -> Q.931
Table 3-15 Origin of Number and Presentation Status;
             SS7 GAP -> Q.931
Table 3-16 Type of Number and Numbering Plan; SS7 OCN -> Q.931
             (First or Only) RNIE at Terminating SPCS
Table 3-17 Origin of Number and Presentation Status; SS7
             OCN -> Q.931 (First or Only) RNIE at Terminating SPCS
Table 3-18 Type of Number and Numbering Plan; SS7 RN -> Q.931
             (Second) RNIE at Terminating SPCS
Table 3-19 Origin of Number and Presentation Status; SS7 RN ->
             Q.931 (Second) RNIE at Terminating SPCS
Table 3-20 Events Following Sending First SETUP to Called Party
Table 3-21 Completion of Transmission Path at Originating and
             Intermediate SPCS
Table 3-22 Responses to Sending ACM
Table 3-23 Mapping of SS7 Cause Value to Inband Treatment
Table 3-24 Mappings of SS7 Cause Value to Signal
             Information Element
Table 3-25 Coding of Backward Call Indicators Parameter
Table 3-26 Events Resulting in Unsuccessful Call
Table 3-27 Coding of Backward Call Indicators Parameter
Table A-1 Address Complete Message
Table A-2 Answer Message
Table A-3 Call Progress Message
Table A-4 Confusion Message
Table A-5 Initial Address Message
Table A-6 Release Message
Table A-7 Suspend Message and Resume Message
List of Figures
Figure B-1 Access Transport Parameter
Figure B-2 Backward Call Indicators
Figure B-3 Called Party Number Parameter
Figure B-4 Calling Party Number Parameter
Figure B-5 Cause Indicators Parameter
Figure B-6 Event Information Parameter
Figure B-7 Forward Call Indicators Parameter
Figure B-8 Generic Address Parameter
Figure B-9 Message Type Parameter
Figure B-10 Optional Backward Call Indicators Parameter
Figure B-11 User Service Information Parameter
Figure B-12 Original Called Number Parameter
Figure B-13 Redirection Information Parameter
List of Figures
Figure C-1 Simple case
Figure C-2 Speech or 3.1 kHz call to Class II equipment
             subscribed to remote network interworking
Figure C-3 Simple Call to Non-ISDN Called Interface
Figure C-4 Simple Call to Non-ISDN Called Interface,
             Called Party Disconnect
Figure C-5 Second Setup and Call Proceeding at Terminating
             ISDN Interface, ISDN Calling Interface
Figure C-6 Second Setup and Call Proceeding at Terminating
             ISDN Interface, Non-ISDN Calling Interface
Figure C-7 Release Complete After Second Setup at ISDN
             Interface, Speech or 3.1 kHz Audio Call
Figure C-8 Release Complete After Second Setup at
             Terminating ISDN Interface, Unrestricted Digital
             Information Call
Figure C-9 SS7 to MF Interworking
Figure C-10 Release Complete with Rejected after First Setup,
             Non-ISDN Calling Party

Gives Telcordia's view of the generic requirements for the use of Signalling System No.7 (SS7) protocol to support Integrated Services Digital Network (ISDN) basic and primary rate access as specified in TR-TSY-000268. This standard defines procedures for using the ISDN User Part of SS7 to establish and release interoffice circuit connections for calls that either originate from or terminate to an ISDN interface. The procedures outlined in this document support setting up calls using the following transfer capabilities: speech, 3.1 kHz audio, 7 kHz audio, and unrestricted digital information.