gr-2936-core: local number portability (lnp) capability … · issue 3 lnp capability...

Issue 3 LNP Capability Specification: Service Provider PortabilityNovember 1997 Contents

GR-2936-CORE

Local Number Portability (LNP) Capability Specification: Service Provider Portability

Contents Contents

Preface .................................................................................................................Preface–1

1. Introduction............................................................................................................. 1–11.1 Purpose and Scope ....................................................................................... 1–11.2 Assumptions .................................................................................................. 1–11.3 Background/Terminology ............................................................................ 1–31.4 Requirements Terminology ......................................................................... 1–41.5 Requirement Labeling Conventions ........................................................... 1–4

1.5.1 Numbering of Requirement and Related Objects ........................ 1–41.5.2 Requirement, Conditional Requirement, and Objective Object

Identification .................................................................................... 1–51.6 Major Changes from GR-2936-CORE, Issue 2 ...........................................1–5

2. User Perspective ..................................................................................................... 2–12.1 Users With Ported Numbers........................................................................2–12.2 Users Without Ported Numbers .................................................................. 2–1

3. Service Provider Perspective (Network Provider).............................................3–1

4. Switch Feature Requirements ...............................................................................4–14.1 Switch Call Processing Requirements........................................................ 4–1

4.1.1 Non LNP-Capable Originating Switch ...........................................4–14.1.2 LNP-Capable Originating Switch ................................................... 4–24.1.3 Intermediate Switch ........................................................................4–64.1.4 Recipient Switch .............................................................................. 4–84.1.5 Donor Switch.................................................................................. 4–11

4.2 AIN Call Processing Requirements (Includes Switch Procedures and TCAP Messages) ......................................................................................... 4–134.2.1 Originating End-Office SSP .......................................................... 4–13

4.2.1.1 Detection of LNP Calls ................................................. 4–134.2.1.2 Processing an LNP Database Query............................ 4–154.2.1.3 LNP Database Response Processing........................... 4–17

4.2.2 Intermediate SSP ........................................................................... 4–204.2.2.1 Detection of LNP Calls ................................................. 4–204.2.2.2 Processing an LNP Database Query............................ 4–214.2.2.3 LNP Database Response Processing........................... 4–21

4.2.3 Donor Switch.................................................................................. 4–214.3 QoR Call Processing ................................................................................... 4–22

4.3.1 Changes to Section 4.3, Since Issue 2 .........................................4–224.3.1.1 Detection of a QoR Call ................................................ 4–224.3.1.2 QoR Call Processing at the Initiating Switch............ 4–22

4.3.2 QoR at the Intermediate Switch................................................... 4–23

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LNP Capability Specification: Service Provider Portability Issue 3Contents November 1997

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4.3.3 QoR at the Donor Switch.............................................................. 4–234.3.4 QoR Feature Interaction ............................................................... 4–234.3.5 QoR Traffic Measurements...........................................................4–24

4.4 Portability With Rate Center Change ....................................................... 4–244.5 Feature Interactions ................................................................................... 4–24

4.5.1 AIN................................................................................................... 4–244.5.1.1 AIN Feature Interactions at a Tandem Switch .......... 4–264.5.1.2 AIN Feature Interactions at the Recipient Switch .... 4–27

4.5.2 CLASS and ISDN Features............................................................ 4–274.5.2.1 TR-NWT-000031 - Calling Number Delivery............... 4–284.5.2.2 TR-NWT-001188 - Calling Name................................... 4–294.5.2.3 TR-NWT-000215 - Automatic Callback (AC) ..............4–294.5.2.4 TR-NWT-000227 - Automatic Recall (AR) .................. 4–304.5.2.5 TR-NWT-000575 - Calling Identity Delivery on Call

Waiting (CIDCW)...........................................................4–314.5.2.6 GR-416-CORE - Call Waiting Deluxe (CWD)..............4–314.5.2.7 TR-TSY-000216 - Customer Originated Trace (COT) 4–314.5.2.8 TR-NWT-000220 - Screening List Editing (SLE) ........ 4–324.5.2.9 TR-NWT-000567 - Anonymous Call Rejection (ACR)4–324.5.2.10 GR-1517-CORE - Outside Calling Area Alerting

(OCAA) ........................................................................... 4–324.5.2.11 TR-NWT-000283 - Simplified Message Desk Interface

(SMDI) ............................................................................ 4–324.5.2.12 TR-TSY-000268 - ISDN Access Call Control Switching

and Signaling Requirements.........................................4–334.5.2.13 TR-TSY-000860 - ISDN Calling Number Identity

Services (I-CNIS) ...........................................................4–344.5.2.14 TR-TSY-000855 - ISDN Automatic Callback (ACB-I) 4–354.5.2.15 GR-866-CORE - ISDN Message Services Generic

Requirements ................................................................. 4–354.5.3 OSS .................................................................................................. 4–354.5.4 Switch-Based Features.................................................................. 4–35

4.5.4.1 Call Forwarding (CF)....................................................4–374.5.4.2 Message Desk Service (MDS) / Voice Mail Service

(Intraswitch) .................................................................. 4–404.5.4.3 Abbreviated Dialing (Non-Business Group) (Speed

Dialing, Speed Calling) ................................................. 4–414.5.4.4 Call Waiting (CW).......................................................... 4–434.5.4.5 Flexible Calling (Multiway, Call Transfer, and Call

Hold) ...............................................................................4–434.5.4.6 Call Pickup (CPU) ......................................................... 4–444.5.4.7 Deny Origination (DO) / Deny Termination (DT) .....4–444.5.4.8 Series Completion (SC) ................................................ 4–444.5.4.9 Business Group (BG) -- Centrex..................................4–454.5.4.10 Multi-Line Hunt Groups (MLHGs) and Hunt-Based

Services........................................................................... 4–454.5.4.11 Packet Services.............................................................. 4–46

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4.5.4.12 Special Codes and Service Access Codes (SACs).....4–464.5.4.13 Coin Lines / Hotel-Motel Lines / Multi-Party Lines.... 4–47

4.6 Transmission ...............................................................................................4–474.7 Administration............................................................................................. 4–49

4.7.1 LRN Administration....................................................................... 4–494.7.2 AIN SSP Trigger Administration ..................................................4–49

4.7.2.1 Extensions to AIN SSP Trigger Administration Functions........................................................................ 4–49

4.7.2.2 Extensions to the AIN SSP Memory Administration Interface.......................................................................... 4–50

4.7.3 QoR Switch Provisioning.............................................................. 4–514.7.3.1 Memory Administration (Configuration

Management) ................................................................. 4–524.7.3.2 SSP Memory Administration Functions ..................... 4–52

4.7.4 Ported-Out Line Designation........................................................ 4–524.7.4.1 Memory Administration................................................ 4–52

4.7.5 Operational Measurements for LNP............................................ 4–534.8 Maintenance ................................................................................................ 4–544.9 AMA Usage Measurements/ Recording....................................................4–56

4.9.1 Scope of AMA Requirements........................................................ 4–574.9.2 Generation of AMA at the Originating Switch ........................... 4–58

4.9.2.1 Originating Switch Launches an LNP Query..............4–594.9.2.2 Originating Switch Is the Recipient Switch ............... 4–644.9.2.3 Originating Exchange Access ...................................... 4–654.9.2.4 Originating Switch Does Not Query - Additional

Call Scenarios ................................................................ 4–664.9.2.5 Calls From Ported Numbers ........................................ 4–66

4.9.3 Generation of AMA at the Originating Intermediate Switch .... 4–684.9.3.1 Originating Intermediate Switch Launches an LNP

Query...............................................................................4–684.9.3.2 Originating Exchange Access ...................................... 4–714.9.3.3 LRN Is Received in Incoming Signaling...................... 4–724.9.3.4 Originating Intermediate Switch Does Not Query -

Additional Call Scenario ............................................... 4–724.9.4 Generation of AMA at the Donor Switch.................................... 4–72

4.9.4.1 Donor Switch Launches an LNP Query ...................... 4–734.9.4.2 “Last Resort” AMA - Interconnecting Networks........ 4–734.9.4.3 Donor Switch Does Not Query - QoR Routing

Attempt ........................................................................... 4–784.9.5 Generation of AMA at the Recipient Switch .............................. 4–78

4.9.5.1 LRN Is Received in Incoming Signaling...................... 4–784.9.5.2 Called Party Number Received in Signaling at

Recipient Switch............................................................ 4–824.9.6 Generation of AMA at the Terminating Intermediate Switch .. 4–83

4.9.6.1 Terminating Intermediate Switch Launches an LNP Query...............................................................................4–84

4.9.6.2 Terminating Intermediate Switch Does Not Query... 4–85

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4.9.6.3 Terminating Intermediate Switch Receives an LRN.................................................................................. 4–86

4.9.6.4 Terminating Intermediate Switch Receives a QoR Routing Attempt ............................................................ 4–88

4.9.6.5 Terminating Intermediate Switch Initiates QoR........ 4–884.9.7 Populating the LNP Core Module for LNP Queries ................... 4–884.9.8 Connecting Network Access Recording Option ........................ 4–92

4.9.8.1 Population of the LNP Core Module for CNAT AMA................................................................................. 4–96

4.9.9 Miscellaneous AMA Requirements .............................................. 4–974.10 Network Management ................................................................................ 4–98

5. Operator Services System (OSS) Requirements ................................................. 5–15.1 0+ Dialed Alternately Billed Calls and 0- Operator Handled Calls .........5–1

5.1.1 LIDB Queries .................................................................................... 5–15.1.2 OLNS Queries ................................................................................... 5–25.1.3 LNP Query Processing at the OSS on the Called Number.......... 5–35.1.4 LNP Response Processing at the OSS on the CalledPartyID

Parameter ......................................................................................... 5–55.1.5 LNP Processing for 1+ Coin, Hotel/Motel, and Multi-Party

Calls ...................................................................................................5–65.2 Busy Line Verification .................................................................................. 5–75.3 Call Completion for Directory Assistance and Intercept.........................5–85.4 Query on Release at the OSS....................................................................... 5–85.5 OSS Call Processing for LNP with Rate Center Change .......................... 5–85.6 Call Rating and AMA Usage Measurements/Recording ...........................5–9

5.6.1 OSS AMA Recording........................................................................5–95.6.1.1 Generation of the LNP Module ...................................... 5–9

5.6.2 Call Rating for LSPP ......................................................................5–11

6. Signaling Requirements ......................................................................................... 6–16.1 ISDNUP ..........................................................................................................6–1

6.1.1 Call Origination in a Portability Environment ............................. 6–16.1.2 Call Setup Signaling Prior to LNP Query ...................................... 6–2

6.1.2.1 Signaling to an LNP-Capable Tandem Switch ............. 6–26.1.2.2 Signaling to an Intermediate Network.......................... 6–2

6.1.3 Call Setup Signaling After LNP Query...........................................6–36.1.4 Abnormal Events ............................................................................. 6–46.1.5 QoR Capability .................................................................................6–56.1.6 Formats and Coding ........................................................................6–5

6.1.6.1 Local Service Provider Portability ................................ 6–66.1.6.2 Query on Release.............................................................6–7

6.2 Routing of TCAP Messages.......................................................................... 6–76.2.1 Routing of TCAP Messages in Support of LNP Call Setup .........6–86.2.2 Routing of TCAP Messages to Support Vertical Service

Operation in an LNP Environment .............................................. 6–136.2.2.1 Message Relay Involving 6-Digit GTAs .......................6–20

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6.2.2.2 Availability, Performance, and Capacity Requirements for Message Relay System................... 6–21

6.3 Signaling Interface/Interconnection......................................................... 6–226.3.1 SS7 Network Interconnection...................................................... 6–236.3.2 Network Interface for Call Setup................................................. 6–23

6.3.2.1 ISDNUP Implications of LNP for Internetwork Call Setup ...............................................................................6–26

6.3.2.2 Internetwork LNP Query/Response Traffic - SCCP/TCAP Implications of LNP ...........................................6–28

6.3.3 Network Interface for CLASS Services....................................... 6–29

7. Network Impacts .................................................................................................... 7–17.1 LNP Interactions with E9-1-1 ......................................................................7–17.2 Security ..........................................................................................................7–1

7.2.1 Network Security Architecture ......................................................7–27.2.1.1 Switches............................................................................ 7–27.2.1.2 SCP.................................................................................... 7–27.2.1.3 SMS.................................................................................... 7–37.2.1.4 Audit Trails....................................................................... 7–3

7.2.2 Lawful Intercept...............................................................................7–47.2.3 Service Provider Trap and Trace ................................................... 7–4

7.3 Security of Operations Systems (OSs) ....................................................... 7–4

Appendix A: Accounting for Donor Network Queries ............................................ A–1A.1 Potential Strategies...................................................................................... A–1

A.1.1 Basis for Recording Donor Network Queries ............................. A–1A.1.2 Location of Querying Switch within Network Arrangement .... A–2

A.2 Summary of Alternatives ............................................................................ A–4

Appendix B: Flow Diagrams ....................................................................................... B–1

Appendix C: Call Flows ............................................................................................... C–1

Appendix D: Query on Release (QoR)....................................................................... D–1D.1 QoR Call Processing .................................................................................... D–1

D.1.1 QoR at Initiating Switch................................................................. D–2D.1.1.1 Detection of a QoR Call ................................................. D–2D.1.1.2 QoR Call Processing at the InItiating Switch.............. D–3

D.1.2 QoR at the Intermediate Switch.................................................... D–5D.1.3 QoR at the Donor Switch............................................................... D–6D.1.4 QoR Feature Interaction ................................................................ D–7

D.1.4.1 Call Forwarding (CF)..................................................... D–7D.1.4.2 Deny Origination (DO) / Deny Termination (DT) ...... D–8

D.1.5 QoR Traffic Measurements............................................................ D–8D.2 Administration.............................................................................................. D–9

D.2.1 AIN Trigger Administration........................................................... D–9D.2.1.1 Extensions to AIN SSP Trigger Administration

Functions......................................................................... D–9

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D.2.1.2 Extensions to the AIN SSP Memory Administration Interface........................................................................... D–9

D.2.2 QoR Switch Provisioning............................................................. D–10D.2.2.1 Memory Administration (Configuration

Management) ................................................................ D–10D.2.2.2 SSP Memory Administration Functions .................... D–10

D.3 AMA Usage Measurements/Recordings .................................................. D–11D.3.1 Generation of AMA at the Originating Switch .......................... D–11

D.3.1.1 Originating Switch Launches an LNP Query............. D–11D.3.2 Generation of AMA at the Originating Intermediate Switch ... D–11

D.3.2.1 Originating Intermediate Switch Launches an LNP Query.............................................................................. D–11

D.3.3 Generation of AMA at the Donor Switch................................... D–12D.3.3.1 Donor Switch Does Not Query - QoR Routing

Attempt .......................................................................... D–12D.3.4 Generation of AMA at the Terminating Intermediate Switch . D–12

D.3.4.1 Terminating Intermediate Switch Receives a QoR Routing Attempt ........................................................... D–12

D.3.4.2 Terminating Intermediate Switch Initiates QoR....... D–14D.4 OSS Requirements ..................................................................................... D–15

D.4.1 QoR at the OSS.............................................................................. D–15D.4.2 Call Rating and AMA Usage Measurements/Recording ........... D–16

D.4.2.1 Generation of the LNP Module ................................... D–16D.5 Signaling Requirements............................................................................. D–16

D.5.1 QoR Capability .............................................................................. D–16D.5.2 Formats and Coding ..................................................................... D–17

D.5.2.1 Cause Indicators ........................................................... D–17D.5.2.2 Forward Call Indicators............................................... D–17

D.6 Signaling Interface/Interconnection........................................................ D–18D.6.1 Network Interface for Call Setup................................................ D–18

D.6.1.1 Originating Network to Terminating Network or Intermediate Network.................................................. D–18

D.6.1.2 Network Interface, Intermediate Network to Terminating Network................................................... D–19

References.................................................................................................... References–1

Acronyms ....................................................................................................... Acronyms–1

Glossary.............................................................................................................Glossary–1

Requirement-Object Index ...................................................................................... ROI–1

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Issue 3 LNP Capability Specification: Service Provider PortabilityNovember 1997 List of Figures

xi

GR-2936-CORE

List of Figures Figures

Figure 4-1 Test Call Mechanism............................................................................ 4–55Figure 4-2 Query Status Indicators for Successful LNP Queries ...................... 4–89Figure 4-3 Query Status Indicators for Unsuccessful LNP Queries ................. 4–91Figure 6-1 LNP Model - Three Network Configuration...................................... 6–25Figure 6-2 LNP Model - Two Network Configuration ........................................ 6–25Figure A-1 Direct vs. Indirect Interconnection..................................................... A–2Figure A-2 Network Arrangements Involving an Intermediate Carrier

(IXC/2PIC).............................................................................................. A–3Figure A-3 Network Arrangements Involving Delivery of Call to LEC from

Originating Network (CLEC, WSP)..................................................... A–3Figure B-1 Originating LNP Switch - No Rate Center Change ............................ B–2Figure B-1 Originating LNP Switch - No Rate Center Change (Continued)...... B–3Figure B-1 Originating LNP Switch - No Rate Center Change (Continued)...... B–4Figure B-1 Originating LNP Switch - No Rate Center Change (Continued)...... B–5Figure B-2 Operator Services System - No Rate Center Change ........................ B–6Figure B-2 Operator Services System - No Rate Center Change (Continued).. B–7Figure B-2 Operator Services System - No Rate Center Change (Continued).. B–8Figure B-2 Operator Services System - No Rate Center Change (Continued).. B–9Figure B-3 Recipient Switch - No Rate Center Change ..................................... B–10Figure C-1 Call Delivery - Originating Switch Query ........................................... C–2Figure C-2 Call Delivery for Non-Ported Number - Originating Switch

Query....................................................................................................... C–4Figure C-3 Call Delivery/Intra-Switch Ported Number - Originating Switch

Query....................................................................................................... C–5Figure C-4 Call Delivery - Originating Network Query (at Tandem Switch) .... C–6Figure C-5 Call Delivery - N-1 Network Query...................................................... C–7

LNP Capability Specification: Service Provider Portability Issue 3List of Tables November 1997

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List of Tables Tables

Table 4-1 BAF Structure Code 0001 for Call Type Code 721 ........................... 4–61Table 4-2 BAF Structure Code 0500 for Call Type Code 721 ........................... 4–62Table 4-3 BAF Structure Code 0625 for Call Type Code 722 ........................... 4–76Table 4-4 BAF Structure Code 0625 for Call Type Code 720 ........................... 4–94Table 6-1 Mapping of Sections to Affected Sections in GR-905-CORE .......... 6–24Table A-1 Call Routing Scenarios for Figures A-2 and A-3 ................................ A–3Table A-2 Summary of Alternatives ...................................................................... A–4Table 4-1 BAF Structure Code 0001 for Call Type Code 721 ..................... ROL–32Table 4-2 BAF Structure Code 0500 for Call Type Code 721 ..................... ROL–33Table 4-3 BAF Structure Code 0625 for Call Type Code 722 ..................... ROL–40Table 4-4 BAF Structure Code 0625 for Call Type Code 720 ..................... ROL–52

gr-2936-core: local number portability (lnp) capability … · issue 3 lnp capability...

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