GR 1129 CORE AINGR: Switch - Intelligent Peripheral Interface (IPI) Contents

Transcription

1 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) Preface...Preface 1 1. Introduction Purpose and Scope Relationship to Other Telcordia AIN GRs and ITU-T Standards Definitions Conventions Requirements Terminology Requirement Labeling Conventions Numbering of Requirement and Related Objects Requirement, Conditional Requirement, and Objective Object Identification Document Organization Major Changes from GR-1129-CORE, Issue Intelligent Peripheral Interface Overview IP Form Interfaces and Logical Subcomponents Software Form Signaling Schemes Local IP Signaling Remote IP Signaling Interrupting IP Processing NCA Signaling Call Originations and Call Terminations IP Functions Recommended Encodings for Parameters on the SSP - IP Interface ResourceType Parameter StrParameterBlock Parameter Play Announcements Play Announcements and Collect Digits The FlexParameterBlock The ResourceEncodingAuthority IPResourceType and IPStrParameterBlock IPResourceMeasure IPResourceMeasurement IPStayOnLine IPReturnBlock Parameter Results from Future Capabilities EnvelopeEncodingAuthority Parameter Message Flow Between an SSP and a Local IP v

2 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November IPI for Originating Services Call Originations on the PRI IPI Originating Triggers on the PRI IPI Supplementary Services for Calls Originated on a PRI IPI Call Originations on the BRI IPI Originating Triggers on the BRI IPI Supplementary Services for Calls Originated on a BRI IPI IPI for Terminating Services Terminating a Call Using the IPI Triggers on Calls Delivered by an SSP Over the IPI Supplementary Services on Connections on a PRI IPI Supplementary Services on Connections on a BRI IPI SSP-IP Call Control Procedures for Send_To_Resource Message Overview of Call-Associated Common Element Procedures Overview of Call-Associated Signaling Procedures Establishing STR-Connection (and CTR-Connection) to IP Clearing STR-Connection (and CTR-Connection) Message Sequences Common Element Procedures for the Send_To_Resource Message Procedures for Extended Ringing Sending a SETUP Message to an IP Signaling During an Active STR Connection IP-Initiated STR-Connection Clearing SSP-Initiated STR-Connection Clearing Error Treatment and Abnormal Events ClearCause Value Mapping Table Messages/Signaling Structure Message Structure for Class II Equipment on PRI Message Structure for Class I Equipment on a BRI Components Invoke Component Return Result Component Return Error Component ASN.1 Description Subscription Parameters Per Interface Examples Line Diagrams Message Flows To Support the Remote IP Message Flow to Establish an STR-Connection to a Remote IP Message Flow Between the SCP/Adjunct and the Local SSP Procedures for Extended Ringing Send_To_Resource with Carrier Information vi

3 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) Message Flow Between the Local SSP and the Remote SSP Local SSP Intermediate Switch Remote SSP Local SSP Message Flow Between the Remote SSP and the Remote IP Message Flow to Pass Intermediate Information from the Remote IP to the SCP/Adjunct Message Flow Between the Remote IP and the Remote SSP Message Flow Between the Remote SSP and the Local SSP Remote SSP Intermediate Switch Local SSP Message Flow Between the Local SSP and the SCP/Adjunct Message Flow for the SCP/Adjunct to Request Subsequent IP Interactions Message Flow Between the SCP/Adjunct and the Local SSP Message Flow Between the Local SSP and the Remote SSP Local SSP Intermediate Switch Remote SSP Message Flow Between the Remote SSP and the Remote IP Message Flow for the Normal Disconnect of a Remote IP Message Flow Between the Remote IP and the Remote SSP Message Flow Between the Remote SSP and the Local SSP Remote SSP Intermediate Switch Local SSP Message Flow Between the Local SSP and the SCP/Adjunct Abnormal Conditions Message Flow for Disconnect of STR-Connection and User Abandonment Message Flow Between the SCP/Adjunct and the Local SSP Message Flow Between the Local SSP and the Remote SSP Message Flow Between the Remote SSP and the Remote IP Message Flow for the SCP/Adjunct Initiating a Return Error Component Message Flow for the SCP/Adjunct Initiating a Reject Component Message Flow for the Remote IP Initiating a Return Error Component vii

4 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November Message Flow for the Remote IP Initiating a Reject Component Message Flow for the Remote SSP Initiating a Return Error Component Message Flow for the Remote SSP Initiating a Reject Component Message Flow for the Remote IP Invoking an ISDN Supplementary Service PRI Supplementary Services BRI Supplementary Services Abnormal Conditions Between the SCP/Adjunct and the Local SSP Abnormal Conditions Between the Local SSP and the Remote SSP Abnormal Conditions at the Remote SSP Abnormal Conditions Between the Remote SSP and the Remote IP IP Not Subscribed to sendtoipresource Operation All Channels Busy Timer Expiration at the Remote SSP Protocol Errors Multiple Invalid Messages Invalid Message Sequence Timer TSTRC Expiration at the Local SSP Non-Call Associated (NCA) Signaling for BRI NCA Signaling Procedures for the SSP Messages Originated by an ISDN-Connected Device ISDN NCA Signaling Operations for an ISDN-Connected Device ISDN NCA Signaling Messages Originated by an ISDN-Connected Device Receipt of a REGISTER Message by the SSP Receipt of envelopncarequest Operation in a REGISTER Message Receipt of envelopncadata Operation in a REGISTER Message Sending of a Query Package by the SSP Sending of a Unidirectional Package by the SSP Receipt of a Response Package NCA Signaling Messages Originated by SCP/Adjunct Overview of SCP/Adjunct Originated NCA Signaling Messages Receipt of a Unidirectional Package by the SSP viii

5 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) Receipt of a Query Package by the SSP Receipt of a RELease COMplete Message by the SSP Message Formats Invoke Component Return Result Component Return Error Component Reject Component AINDigits FailureCause Value Mapping Table Error Procedures SSP-ISDN-Connected Device Error Procedures SSP-SCP/Adjunct Error Procedures Administrative Information General Subscription Parameters Per Interface Non-Call Associated (NCA) Signaling for PRI NCA Signaling Procedures for the SSP Messages Originated by an ISDN-Connected Device ISDN NCA Signaling Operations for an ISDN-Connected Device ISDN NCA Signaling Messages Originated by an ISDN-Connected Device Receipt of a SETUP Message by the SSP Receipt of envelopncarequest Operation in a SETUP Message Receipt of envelopncadata Operation in a SETUP Message Sending of a Query Package by the SSP Sending of a Unidirectional Package by the SSP Receipt of a Response Package NCA Signaling Messages Originated by SCP/Adjunct Overview of SCP/Adjunct Originated NCA Signaling Messages Receipt of a Unidirectional Package by the SSP Receipt of a Query Package by the SSP Receipt of a RELease COMplete Message by the SSP Message Formats Invoke Component Return Result Component Return Error Component Reject Component AINDigits FailureCause Value Mapping Table Error Procedures SSP-ISDN-Connected Device Error Procedures ix

6 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November SSP-SCP/Adjunct Error Procedures Administrative Information General Subscription Parameters Per Interface Automatic Message Accounting (AMA) AMA Data Generation Strategy Local IP Access Remote IP Access IP Call Origination IP Call Termination NCA Signaling IPI Messaging AMA Requirements Switch Timing Common Element Procedures for Connect_To_Resource Message IPI for Terminating Services Triggers on Calls Delivered by an SSP Over the IPI Supplementary Services on Connections on a PRI IPI Supplementary Services on Connections on a BRI IPI SSP-IP Call Control Procedures for Connect_To_Resource Message Sending of a SETUP Message to an IP Subsequent Action Signaling During an Active CTR-Connection Receipt of a FACILITY message Sending a FACILITY message Sending a DISConnect message IP-Initiated CTR-Connection Clearing SSP-Initiated CTR-Connection Clearing Error Treatment and Abnormal Events ASN.1 Description of connecttoipresource Operation Subscription Parameters Per Interface Examples Line Diagrams Timing and Tolerances SSP - SCP/Adjunct Interface Timer (Timer T1) ISDN ALERTing Timer (Timer T301) ISDN SETUP Timer (Timer T303) ISDN CALL Proceeding Timer (Timer T310) NCA Timer (Timer TINCA) IP Disconnect Timer (Timer TDISC) STR-Connection Timer (Timer TSTRC) Appendix A: Service Example and Sample Message Flow... A 1 A.1 Service Example... A 1 A.2 Local IP Example... A 2 x

7 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) A.2.1 Error-Free Case... A 3 A Connection Establishment... A 3 A Active Call State... A 4 A Call Clearing... A 5 A.2.2 Error-Free Case... A 5 A.3 Remote IP Example... A 6 A.3.1 Error-Free Case... A 6 A Connection Establishment... A 6 A Active Call State... A 7 A Call Clearing... A 7 A.3.2 Error Case... A 8 Appendix B: Operations... B 1 B.1 Configuration Management (Memory Administration)... B 5 B.2 Fault Management (Surveillance)... B 6 B.2.1 Unavailability of the IP or IP/Resource Types... B 6 B Detection and Action Taken by the SSP... B 6 B Detection and Action Taken by the IP... B 8 B.2.2 IP Taken Out of Service... B 8 B.2.3 IP In Service/Resource Type Status... B 10 B.2.4 Availability Status of IP... B 11 B.2.5 ASN.1 Format for Operations Functions... B 12 B.3 Fault Management (Testing)... B 15 B.3.1 Call History Log... B 16 B.3.2 Test Calls and the AIN Maintenance Parameters... B 18 B.3.3 C-Log Management and Administration... B 21 B.3.4 Additional IP Testing Capabilities... B 21 B.3.5 ISDN Link Testing... B 21 B.4 Performance Management (Traffic Management)... B 21 B.4.1 Overview... B 22 B.4.2 Excessive IP Generated Messages... B 23 B.4.3 Detection of Congestion/Overload in the IP... B 23 B Notification by the IP to the SCP/Adjunct via the SSP... B 24 B Reduction of Resource Requests Sent to the IP... B 25 B Reduction Rate Indices/Actual Values... B 25 B.4.4 Traffic Management Measurements... B 26 B.5 Data Collection... B 27 Appendix C: Security for an Open Network Interface at the IP... C 1 C.1 Definitions and a General Usage... C 1 C.2 Applicability to the IPI... C 3 C.3 Security Framework for IP Access to the AIN Network... C 3 C.3.1 Overview... C 3 C.3.2 Specifics... C 5 xi

8 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November 2003 C.3.3 Security Exchanges... C 6 C A Standards Model... C 6 C The IPI Security Exchange... C 6 C.3.4 SecurityEnvelope Specifics... C 7 C SecurityEnvelope... C 7 C SSP Receipt of an IP Originated Message... C 10 C SSP Receipt of an IP Response... C 10 C SCP/Adjunct Receipt of an IP Originated Message.. C 10 C.3.5 Examples of IPI Security Exchanges Using SecurityEnvelope... C 11 C Example 1 (Simple)... C 12 C Example 2 (Complex)... C 13 C.3.6 IP Problems Detected by the LEC... C 13 C.3.7 Administration... C 14 C.3.8 Applicability to the ONA Concept... C 14 Appendix D: IP Automatic Message Accounting (AMA)... D 1 D.1 AMA Requirements... D 1 D.1.1 Timing at the IP... D 1 D.1.2 IP and SCP/Adjunct Collection of Other Resource-Specific Measurements... D 2 D.1.3 SCP/Adjunct Control of IP Resource Data... D 2 D.1.4 Transmission of IP Collected Billing Data to the SCP/Adjunct... D 3 D.1.5 Aggregate Data Collection... D 4 Appendix E: IP Timing... E 1 E.1 Interdigit Timers... E 1 Appendix F: Performance...F 1 F.1 Methodology...F 1 F.2 Performance Benchmarking...F 1 F.2.1 Benchmark Transactions...F 1 F.2.2 Benchmark Traffic-Mix...F 3 F.3 IP Response Time Operations...F 4 F.3.1 Connection Accept Time...F 4 F.3.2 IP User Wait Time...F 5 F.3.3 User Information Transfer Time...F 6 F.3.4 Release Delay Time...F 6 F.3.5 Clear Confirmation Time...F 6 F.4 Disk Lookup Time...F 7 F.5 Timers...F 7 F.6 IP Capacity...F 8 Appendix G: Capacity Engineering... G 1 G.1 Capacity Estimations... G 1 xii

9 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) G.1.1 Message Processing Capacity... G 1 G.1.2 ISDN Link Capacity... G 4 G.1.3 Functional Resources... G 5 G.1.4 Memory Sizing... G 5 G.1.5 Overall Objectives... G 5 G.2 Capacity Engineering Measurements... G 6 G.2.1 Assumptions... G 6 G.2.2 Traffic Measurements... G 6 Appendix H: Reliability and Quality... H 1 H.1 Availability... H 1 H.1.1 Replication to Achieve High Availability... H 1 H.2 Reliability and Quality Switching Systems Generic Requirements... H 2 Appendix I: Environment...I 1 I.1 Power...I 1 I.2 Equipment...I 1 I.3 Electromagnetic and Electrical Environment...I 2 Appendix J: Supplier Support... J 1 Appendix K: ISDNUP Remote Operations (RO) Parameter and Facility (FAC) Message... K 1 K.1 Remote Operations (RO) Parameter... K 1 K.1.1 Component Coding... K 1 K.1.2 Tag Coding... K 3 K Tag Class Coding... K 3 K Tag Form Coding... K 4 K Tag Code Coding... K 5 K.1.3 Length Coding... K 5 K.1.4 Coding... K 7 K.1.5 Component Types... K 7 K Invoke... K 8 K Return Result... K 8 K Return Error... K 8 K Reject... K 8 K.1.6 Component Coding... K 8 K Component Type Tag Coding... K 8 K Component ID Tag Coding... K 11 K Operation Code Tag Coding... K 12 K Parameter Tag Coding... K 12 K Error Code Tag Coding... K 12 K Problem Code Coding... K 13 K.1.7 Problem Codes... K 15 K General Problem... K 15 K Invoke Problem... K 15 xiii

10 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November 2003 K Return Result Problem... K 15 K Return Error Problem... K 16 K.1.8 ASN.1 Specification of Components... K 16 K.2 ISDNUP Facility (FAC) Message... K 20 References... References 1 Glossary...Glossary 1 Acronyms... Acronyms 1 Requirement-Object Index... ROI 1 xiv

11 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) List of Figures List of Figures Figures Figure 2-1. IP Physical Composition Figure 2-2. The Application Layer Figure 2-3. Self-Checking Software Figure 2-4. Communications Protocol Stack Figure 2-5. IP Capabilities Figure 4-1. A Valid STR-Connection Establishment Message Sequence to the IP Figure 4-2. Valid Clearing STR-Connection Message Sequences IP to SSP Figure 4-3. ASN.1 Description of sendtoipresource Operation (Sheet 1 of 3) Figure 4-4. ASN.1 Description of cancelipresource Operation Figure 4-5. SSP Requests sendtoipresource Operation and IP Performs Operation Successfully Figure 4-6. SSP Requests sendtoipresource Operation and IP Cannot Perform the Operation Figure 4-7. IP and SCP/Adjunct Exchange Information Through SSP Figure 4-8. First Attempt Unsuccessful (An Operation Value Is Unrecognized by the SSP). Second Attempt Successful Figure 4-9. SSP Requests IP to Clear Call Figure 5-1. Remote IP Message Flow - Normal Disconnect Figure 5-2. Remote IP Message Flow - SCP/Adjunct Disconnect or User Figure 6-1. Abandonment ASN.1 Description of envelopncarequest Operation (Sheet 1 of 4) Figure 6-2. ASN.1 Description of envelopncadata Operation (Sheet 1 of 2) Figure 6-3. ASN.1 Description of envelopncadata5 Operation Figure 6-4. NCA Signaling Initiated by ISDN-Connected Device Figure 6-5. NCA Signaling Initiated by SCP/Adjunct Figure 7-1. NCA Signaling Initiated by ISDN-Connected Device Figure 7-2. NCA Signaling Initiated by SCP/Adjunct Figure 9-1. ASN.1 Description of connecttoipresource Operation (Sheet 1 of 3) Figure 9-2. SSP Requests connecttoipresource Operation and IP Performs Operation Successfully Figure 9-3. SSP Requests connecttoipresource Operation and IP Cannot Perform the Operation Figure 9-4. IP and SCP/Adjunct Exchange Information Through SSP Figure 9-5. Operation Value in the FACILITY Message Is Unrecognized by SSP Figure 9-6. SSP Requests IP To Terminate the CTR-Connection Figure A-1. Call Flow for a Voice-Based Toll-Restriction Service... A 1 xv

12 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November 2003 List of Figures Figure A-2. Local IP Protocol... A 4 Figure A-3. IP-Initiated Call Clearing... A 5 Figure A-4. Remote IP Protocol... A 7 Figure A-5. IP-Initiated Call Clearing... A 8 Figure F-1. Example of IP Response Time versus Load Curve...F 3 Figure G-1. Estimation of Limiting Total Occupancy (Illustrative only)... G 2 Figure G-2. Estimation of Message Processing Capacity (Illustrative only)... G 4 Figure H-1. Downtime Objective Examples for IP Services... H 3 Figure K-1. Remote Operations Parameter... K 1 Figure K-2. Structure of Component and Information Element... K 2 Figure K-3. Octet Labeling Scheme... K 2 Figure K-4. Bit Labeling Scheme... K 2 Figure K-5. Types of... K 3 Figure K-6. Format of Tag... K 3 Figure K-7. Format of the Tag Code... K 5 Figure K-8. Format of Length Field... K 7 xvi

13 Issue 8, November 2003 AINGR: Switch - Intelligent Peripheral Interface (IPI) List of Tables List of Tables Tables Table 3-1. IPResourceType Values and Their Meanings Table 4-1. Handling of Queries During STR Processing Table 4-2. ClearCause Descriptions Table 4-3. IP Uses DISConnect Message To Initiate Normal Call Clearing Table 4-4. SSP Uses FACILITY Message When a Subsequent Component Is Sent to IP for Active STR-Connection or CTR-Connection Table 4-5. IP Uses FACILITY Message for Subsequent Result Exchange With SSP for Active STR-Connection or CTR-Connection Table 4-6. IP Uses RELease COMplete Message To Indicate It Has Released the Channel and Call Reference Table 4-7. SSP Uses SETUP Message To Establish STR-Connection to IP and Request sendtoipresource Operation Table 4-8. IP Uses DISConnect Message To Initiate Normal Call Clearing Table 4-9. SSP Uses FACILITY Message When Subsequent Component Is Sent to IP for Active STR-Connection or CTR-Connection Table IP Uses FACILITY Message for Subsequent Result Exchange with SSP for Active STR-Connection or CTR-Connection Table IP Uses RELease COMplete Message To Indicate It Has Released the Channel and Call Reference Table SSP Uses SETUP Message To Establish STR-Connection or CTR-Connection to IP and Request A sendtoipresource connecttoipresource Operation Table Invoker (SSP) Uses this Component To Request Operation from Performer (IP) Table SSP or the IP Uses this Component To Return Results and Indicate the Operation Was Performed Successfully Table SSP or IP Uses this Component To Indicate that Requested Operation Was Performed Unsuccessfully Table 6-1. Overview of ISDN Message Type <-> TCAP Package Interworking Table 6-2. Overview of ISDN FIE - Component Type <-> TCAP Component Type Interworking Table 6-3. SSP or ISDN-Connected Device Uses Invoke Component To Request an Operation Table 6-4. SSP or ISDN-Connected Device Uses this Component To Return the Results and To Indicate that the Operation Was Performed Successfully Table 6-5. SSP or ISDN-Connected Device Uses this Component To Indicate that Requested Operation Was Performed Unsuccessfully Table 6-6. SSP or ISDN-Connected Device Uses this Component To Indicate that the Requested Operation Was Rejected xvii

14 AINGR: Switch - Intelligent Peripheral Interface (IPI) Issue 8, November 2003 List of Tables Table 6-7. FailureCause Value Mapping from Corresponding Error Types Returned in the Return Error/Reject Component from IP Table 7-1. Overview of PRI ISDN Message Type <-> TCAP Package Interworking Table 7-2. Overview of ISDN FIE - Component Type <-> TCAP Component Type Interworking Table 7-3. SSP or ISDN-Connected Device Uses Invoke Component To Request an Operation Table 7-4. SSP or ISDN-Connected Device Uses this Component To Return the Results and To Indicate that the Operation Was Performed Successfully Table 7-5. SSP or ISDN-Connected Device Uses this Component To Indicate that Requested Operation Was Performed Unsuccessfully Table 7-6. SSP or ISDN-Connected Device Uses this Component To Indicate that the Requested Operation Was Rejected Table 7-7. FailureCause Value Mapping from Corresponding Error Types Returned in the Return Error/Reject Component from IP Table 9-1. Local SSP - Categorization of Responses Table 9-2. Remote SSP - Categorization of Responses Table B-1. Types of Data Collected... B 28 Table H-1. IP Downtime Objective Examples... H 2 Table K-1. Coding of Tag Class... K 4 Table K-2. Coding of Element Form... K 4 Table K-3. Invoke Component... K 9 Table K-4. Return Result Components... K 9 Table K-5. Return Error Component... K 10 Table K-6. Reject Component... K 10 Table K-7. Component Type Tag... K 10 Table K-8. Coding of Component ID Tag... K 11 Table K-9. Coding of Null Tag... K 11 Table K-10. Coding of Operation Code Tag... K 12 Table K-11. Coding of Sequence and Set Tag... K 12 Table K-12. Coding of Error Code Tag... K 13 Table K-13. Coding of Problem Type Tags... K 13 Table K-14. Coding of General Problem... K 13 Table K-15. Coding of Invoke Problem... K 14 Table K-16. Coding of Return Result Problem... K 14 Table K-17. Coding of Return Error Problem... K 14 xviii