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Inter-operability Specification (IOS) for2CDMA 2000 Access Network Interfaces3

(PN-4545)4

Ballot Version5

June 20006

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TR-45.4 Chair: Steve Jones, NEC America8

Editor: Janice Wunsch, Lucent Technologies Inc.9

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Steve Jones Janice WunschNEC America Lucent Technologies Inc.Phone: +1.972.318.0564 Phone: +1.630.979.6429Fax: +1.972.317.2574 Fax: +1.630.224.9500Email: ssj@sdf.lonestar.org Email: wunsch@lucent.com

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Table of Contents1

FOREWORD ..........................................................................................................................................XXV2

COPYRIGHT INFORMATION ...........................................................................................................XXX3

1. FUNCTIONAL OVERVIEW ...............................................................................................................14

1.1 PURPOSE...........................................................................................................................................151.2 SCOPE...............................................................................................................................................361.3 ORGANIZATION.................................................................................................................................47

1.3.1 Architectures Supported ..........................................................................................................481.3.2 UNUSED SECTION ................................................................................................................491.3.3 IOS V4.0 Layout ......................................................................................................................410

1.4 DOCUMENTATION CONVENTIONS .....................................................................................................5111.4.1 Procedural Descriptions..........................................................................................................612

1.5 REFERENCES.....................................................................................................................................7131.5.1 Telecommunications Industry Association (TIA) / Electronics Industry Association (EIA) ...7141.5.3 International Telecommunications Union - Telecommunications Sector (ITU-T)...................9151.5.4 Other......................................................................................................................................1016

1.6 TERMINOLOGY ...............................................................................................................................11171.6.1 Acronyms ...............................................................................................................................11181.6.2 Definitions..............................................................................................................................1719

1.7 INTERFACE MODEL.........................................................................................................................21201.7.1 Reference Points A, Ater, and Aquater .......................................................................................21211.7.2 Interface Reference Model.....................................................................................................22221.7.3 MSC – BS Functional Partitioning........................................................................................24231.7.4 Information Flows .................................................................................................................25241.7.5 Protocol Reference Model .....................................................................................................2625

1.7.5.1 MSC-BS interface Channel Types.........................................................................................................26261.7.5.2 Transport Protocols ...............................................................................................................................26271.7.5.3 Layer 3 - A1 Interface: Base Station Application Part ..........................................................................2728

1.7.6 Packet Data Micro-Mobility and Macro-Mobility Concepts.................................................2929

2. CALL PROCESSING AND SUPPLEMENTARY SERVICES ......................................................3030

2.1 CALL CONTROL ..............................................................................................................................30312.1.1 Terrestrial Circuit Allocation ................................................................................................30322.1.2 Radio Channel Allocation......................................................................................................30332.1.3 Traffic Channel Release.........................................................................................................3034

2.2 A1 INTERFACE CALL SETUP FOR VOICE AND CIRCUIT DATA CALLS...............................................31352.2.1 Mobile Originated Calls ........................................................................................................3136

2.2.1.1 Connection Management (CM) Service Request ..................................................................................31372.2.1.2 Complete Layer 3 Information ..............................................................................................................32382.2.1.3 UNUSED SECTION (Setup) ................................................................................................................33392.2.1.4 UNUSED SECTION.............................................................................................................................33402.2.1.5 Assignment Request ..............................................................................................................................33412.2.1.6 Assignment Complete............................................................................................................................33422.2.1.7 Assignment Failure................................................................................................................................33432.2.1.8 UNUSED SECTION.............................................................................................................................34442.2.1.9 Progress .................................................................................................................................................34452.2.1.10UNUSED SECTION.............................................................................................................................34462.2.1.11UNUSED SECTION 2.2.1.12 UNUSED SECTION ............................................................................34472.2.1.13UNUSED SECTION.............................................................................................................................34482.2.1.15UNUSED SECTION.............................................................................................................................3449

2.2.2 Mobile Origination Examples................................................................................................34502.2.2.1 Mobile Origination................................................................................................................................35512.2.2.2 Mobile Origination with Access Probe Handoff, Access Handoff and Channel Assignment into52Soft/Softer Handoff ............................................................................................................................................37532.2.2.3 Mobile Origination with PACA Service................................................................................................4254

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2.2.3 Mobile Terminated Voice and Circuit Data Calls .................................................................4812.2.3.1 Paging Request ......................................................................................................................................4822.2.3.2 Paging Response ...................................................................................................................................4932.2.3.3 UNUSED SECTION.............................................................................................................................4942.2.3.4 UNUSED SECTION.............................................................................................................................4952.2.3.5 UNUSED SECTION.............................................................................................................................4962.2.3.6 Assignment Request ..............................................................................................................................5072.2.3.7 Assignment Complete............................................................................................................................5082.2.3.8 Assignment Failure................................................................................................................................5092.2.3.9 UNUSED SECTION h ..........................................................................................................................50102.2.3.10Connect .................................................................................................................................................50112.2.3.11UNUSED SECTION.............................................................................................................................50122.2.3.12Alert With Information..........................................................................................................................5113

2.2.4 Mobile Termination Examples...............................................................................................52142.2.4.1 Mobile Termination...............................................................................................................................52152.2.4.2 Mobile Termination, Assignment Retry ................................................................................................5516

2.2.5 Mobile to Mobile Calls ..........................................................................................................58172.2.6 Emergency Calls ....................................................................................................................58182.2.7 Test Calls ...............................................................................................................................58192.2.8 BS Initiated Call Setup...........................................................................................................5820

2.2.8.1 BS Service Request ...............................................................................................................................58212.2.8.2 BS Service Response.............................................................................................................................59222.2.8.3 BS Initiated Call Setup Example ...........................................................................................................5923

2.3 A1 INTERFACE CALL CLEARING PROCEDURES ...............................................................................61242.3.1 Call Clearing Initiated by the MS or BS................................................................................6125

2.3.1.1 Successful Clear Scenarios....................................................................................................................61262.3.1.2 Unsuccessful Call Clearing Procedures.................................................................................................61272.3.1.3 UNUSED SECTION.............................................................................................................................61282.3.1.4 UNUSED SECTION.............................................................................................................................61292.3.1.5 Clear Request ........................................................................................................................................61302.3.1.6 Clear Command.....................................................................................................................................62312.3.1.7 Clear Complete......................................................................................................................................6232

2.3.2 Call Clearing Initiated by the MSC .......................................................................................63332.3.2.1 Scenario 1 - Clear from the Network.....................................................................................................63342.3.2.2 UNUSED SECTION.............................................................................................................................63352.3.2.3 Call clearing via Clear Command..........................................................................................................63362.3.2.4 Call Clearing when Tones/Announcements are Provided .....................................................................6437

2.3.3 Call Clearing Collision..........................................................................................................64382.3.4 Call Clearing for Handoff......................................................................................................64392.3.5 Call Flow Diagrams for Call Clear Operation......................................................................6440

2.3.5.1 Call Clear Initiated by MS.....................................................................................................................64412.3.5.2 Call Clear Initiated by BS......................................................................................................................66422.3.5.3 Call Clear Initiated by MSC ..................................................................................................................6743

2.4 TRAFFIC CHANNEL RADIO LINK SUPERVISION ................................................................................68442.5 SUPPORT OF SUPPLEMENTARY SERVICES .......................................................................................6845

2.5.1 Support of TIA/EIA 664 Wireless Features............................................................................68462.5.1.1 Flash with Information ..........................................................................................................................69472.5.1.2 Flash with Information Ack...................................................................................................................69482.5.1.3 Feature Notification...............................................................................................................................70492.5.1.4 Feature Notification Ack .......................................................................................................................7050

2.5.2 DTMF Transmission Using In-band Tones ...........................................................................71512.5.3 Burst DTMF Transmission ....................................................................................................71522.5.4 UNUSED SECTION ..............................................................................................................71532.5.5 Supplementary Services Flow Charts ....................................................................................7254

2.5.5.1 UNUSED SECTION.............................................................................................................................72552.5.5.2 Call Waiting ..........................................................................................................................................72562.5.5.3 UNUSED SECTION.............................................................................................................................73572.5.5.4 UNUSED SECTION.............................................................................................................................73582.5.5.5 Three-Way Calling – (Method 1) ..........................................................................................................73592.5.5.6 Three-Way Calling - (Method 2)...........................................................................................................7460

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2.5.5.7 UNUSED SECTION.............................................................................................................................7412.5.5.8 UNUSED SECTION.............................................................................................................................7422.5.5.9 Message Waiting Notification on the Paging Channel ..........................................................................7532.5.5.10Message Waiting Notification on the Traffic Channel ..........................................................................764

2.6 SUPPORT OF SHORT MESSAGE SERVICE..........................................................................................7752.6.1 SMS Procedures.....................................................................................................................786

2.6.1.1 SMS - Mobile Originated Point-to-Point ..............................................................................................7872.6.1.2 SMS - Mobile Terminated Point-to-Point .............................................................................................7882.6.1.3 SMS - Broadcast....................................................................................................................................789

2.6.2 SMS Delivery on the Control Channel...................................................................................79102.6.2.1 ADDS Page ...........................................................................................................................................79112.6.2.2 ADDS Transfer......................................................................................................................................79122.6.2.3 ADDS Page Ack....................................................................................................................................81132.6.2.4 SMS Message Flow Using ADDS, Control Channel ............................................................................8114

2.6.3 SMS Delivery on the Traffic Channel ....................................................................................89152.6.3.1 ADDS Deliver .......................................................................................................................................89162.6.3.2 ADDS Deliver Ack................................................................................................................................89172.6.3.3 SMS Message Flow Using ADDS, Traffic Channel..............................................................................9018

2.7 SUPPORT OF OVER-THE-AIR SERVICE PROVISIONING (OTASP) AND OVER THE AIR PARAMETER19ADMINISTRATION (OTAPA).......................................................................................................................9220

2.7.1 OTASP Support......................................................................................................................92212.7.1.1 OTASP Call Setup.................................................................................................................................93222.7.1.2 OTASP Data Exchanges........................................................................................................................93232.7.1.3 ADDS Deliver .......................................................................................................................................93242.7.1.4 ADDS Deliver ACK..............................................................................................................................93252.7.1.5 SSD Update procedure ..........................................................................................................................93262.7.1.6 Privacy Mode procedure........................................................................................................................93272.7.1.7 Rejection ...............................................................................................................................................93282.7.1.8 OTASP Call Clear .................................................................................................................................93292.7.1.9 OTASP Message Flow ..........................................................................................................................9430

2.7.2. OTAPA support...........................................................................................................................96312.8 ERROR HANDLING ..........................................................................................................................9732

2.8.1 Rejection ................................................................................................................................97332.8.1.1 Successful Operation .............................................................................................................................97342.8.1.2 Failure Operation...................................................................................................................................9735

2.9 UNUSED SECTION .....................................................................................................................97362.10 MOBILE ORIGINATED CALLS WITH PACA SERVICE .......................................................................9837

2.10.1 PACA Service Support ...........................................................................................................99382.10.1.1PACA Command...................................................................................................................................99392.10.1.2PACA Command Ack ...........................................................................................................................99402.10.1.3PACA Update......................................................................................................................................100412.10.1.4PACA Update Ack ..............................................................................................................................10142

2.11 SUPPORT OF POSITION LOCATION SERVICE...................................................................................102432.12 USER ZONES .................................................................................................................................10344

2.12.1 Invoking User Zone at Registration.....................................................................................103452.12.2 Use of User Zones During Call Setup..................................................................................104462.12.3 Changing User Zone During a Call.....................................................................................10547

2.12.3.1User Zone Change ...............................................................................................................................105482.13 CIRCUIT DATA CALLS ...................................................................................................................10649

2.13.1 Asynchronous Data and Group-3 Fax Services...................................................................106502.13.1.1Data Only ............................................................................................................................................10651

2.13.2 A5 Connections for Circuit Data Calls................................................................................106522.13.3 Support for Handoffs of Asynchronous Data and G3 Fax Calls .........................................10753

2.14 PACKET DATA CALLS ...................................................................................................................108542.14.1 Packet Data Assumptions ....................................................................................................109552.14.2 BS Initiated Call Setup.........................................................................................................10956

2.14.2.1BS Service Request .............................................................................................................................110572.14.2.2BS Service Response...........................................................................................................................110582.14.2.3BS Initiated Call Setup Example .........................................................................................................11159

2.14.3 A8/A9 Interface Procedures.................................................................................................11260

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2.14.4 A8/A9 Interface Setup Procedures And Messages...............................................................11212.14.4.1A9-Setup-A8 .......................................................................................................................................11222.14.4.2A9-Connect-A8 ...................................................................................................................................11332.14.4.3A9-BS Service Request .......................................................................................................................11442.14.4.4A9-BS Service Response.....................................................................................................................1145

2.14.5 A8/A9 Interface Clearing Procedures and Messages ..........................................................11562.14.5.1Successful Clearing Scenarios.............................................................................................................11572.14.5.2Unsuccessful A8 Interface Clearing Procedures..................................................................................11682.14.5.3A9-Release-A8 ....................................................................................................................................11792.14.5.4A9-Release-A8 Complete....................................................................................................................117102.14.5.5A9-Disconnect-A8...............................................................................................................................11811

2.14.6 A8/A9 Interface Handoff Procedures and Messages ...........................................................119122.14.6.1A9-Air Link (AL) Connected ..............................................................................................................119132.14.6.2A9-Air Link (AL) Connected Ack.......................................................................................................119142.14.6.3A9-Air Link (AL) Disconnected..........................................................................................................120152.14.6.4A9-Air Link (AL) Disconnected Ack ..................................................................................................12016

2.14.7 A8/A9 Call Flows................................................................................................................121172.14.7.1Mobile Initiated Initial Call Setup and Mobile IP Registration – Successful Operation .....................121182.14.72 BS Initiated Call Release to Dormant State.........................................................................................123192.14.7.3MS Initiated Call Release to Dormant State........................................................................................125202.14.7.4MS Power Down .................................................................................................................................127212.14.7.5PDSN Initiated Service Release ..........................................................................................................129222.14.7.6MS Initiated Call Re-Activation from Dormant State .........................................................................130232.14.7.7Network Initiated Call Re-Activation from Dormant State .................................................................130242.14.7. Mobile Terminated Packet Data Rejection During a Voice Call .........................................................133252.14.7.9Dormant Handoff (Inter-BSC/Inter_PCF) - Mobile served by same PDSN........................................134262.14.7.10 Dormant Handoff (Inter-BSC/Inter_PCF) - Mobile served by a different PDSN ............................136272.14.7.11 Soft / Softer Handoff........................................................................................................................137282.14.7.12 Inter-BS Hard Handoff (within the same PCF) ................................................................................138292.14.7.13 Inter-PCF Hard Handoff (Within same PDSN)................................................................................141302.14.7.14 Inter-PCF Hard Handoff (Within same PDSN) With Return On Failure.........................................14431

2.15 A10/A11 INTERFACE PROCEDURES..............................................................................................147322.15.1 A10 Interface Setup Procedures ..........................................................................................14833

2.15.1.1A10 Connection Establishment ...........................................................................................................148342.15.2 A10 Interface Operational Procedures................................................................................15035

2.15.2.1A10 Connection – Periodic Re-registration.........................................................................................150362.15.3 A10 Interface Release Procedures.......................................................................................15037

2.15.3.1A10 Connection Release – PCF Requested........................................................................................150382.15.3.2A10 Connection Release – PDSN Initiated ........................................................................................15139

2.15.4 A10 Interface Packet Accounting Procedures .....................................................................152402.15.5 A10/A11 Interface Call Flows .............................................................................................15241

2.15.5.1Mobile Originated Packet Call Setup – Successful Operation ............................................................152422.15.5.2Mobile Originated Packet Call Setup – Failure Operation ..................................................................155432.15.5.3 Mobile Originated Packet Call Setup – With registration to alternate PDSN ....................................157442.15.5.4Packet Data Service Session Clearing-PDSN Initiated........................................................................160452.15.5.5Packet Data Service Session Clearing – MSC Initiated.......................................................................162462.15.5.6Packet Data Service Session Clearing – MS Initiated .........................................................................163472.15.5.7Packet Data Service Session – PDSN Initiated (Crossing A11-Registration Request and A11-48Registration Update).........................................................................................................................................164492.15.5.8Inter-PCF Dormant Handoff – Mobile Continues to be Served by the Serving PDSN .......................166502.15.5.9Inter-PCF Dormant Handoff – Mobile Served by a New Target PDSN..............................................170512.15.5.10 Inter-PCF Hard Handoff – Mobile Continues to be Served by the Serving PDSN..........................174522.15.5.11 Inter-BS Hard Handoff – Mobile Served by a New Target PDSN...................................................17853

3. RADIO RESOURCE MANAGEMENT..........................................................................................18454

3.1 RADIO CHANNEL SUPERVISION.....................................................................................................184553.1.1 Traffic Channel Radio Link Supervision..............................................................................184563.1.2 Idle Channel Observation....................................................................................................18457

3.2 RADIO CHANNEL MANAGEMENT ..................................................................................................184583.2.1 Radio Channel Configuration Management........................................................................184593.2.2 Radio Traffic Channel Management....................................................................................18560

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3.2.2.1 Radio Channel Allocation ...................................................................................................................18513.2.2.2 Radio Traffic Channel Release ............................................................................................................18523.2.2.3 Radio Traffic Channel Power Control .................................................................................................18533.2.2.4 UNUSED SECTION...........................................................................................................................18543.2.2.5 Channel Encoding and Decoding ........................................................................................................1855

3.3 HANDOFF VIA MSC ......................................................................................................................18663.3.1 Introduction .........................................................................................................................1867

3.3.1.1 Recognition That a Handoff is Required by a BS................................................................................18683.3.1.2 Recognition That a Handoff is Required by the MSC.........................................................................18693.3.1.3 Concept of “Designated Cell” .............................................................................................................18610

3.3.2 Inter-BS Hard Handoff ........................................................................................................187113.3.2.1 Triggering Phase..................................................................................................................................187123.3.2.2 Target Determination Phase ................................................................................................................187133.3.2.3 Resource Establishment.......................................................................................................................188143.3.2.4 Execution Phase ..................................................................................................................................189153.3.2.5 UNUSED SECTION...........................................................................................................................191163.3.2.6 Call Clearing .......................................................................................................................................191173.3.2.7 Handoff Failure Handling....................................................................................................................19218

3.3.3 Intra-BS Handoff .................................................................................................................194193.3.3.1 Handoff Performed..............................................................................................................................19420

3.4 HANDOFF VIA DIRECT BS-TO-BS SIGNALING ...............................................................................195213.4.1 A3 Interface Procedures and Messages...............................................................................19522

3.4.1.1 A3 Interface Setup Procedures and Messages .....................................................................................195233.4.1.2 A3 Interface Operational Procedures and Messages............................................................................196243.4.1.3 A3 Interface Clearing Procedures and Messages.................................................................................20325

3.4.2 UNUSED SECTION ............................................................................................................205263.4.3 A7 Interface Procedures and Messages...............................................................................20527

3.4.3.1 A7 Interface Messages.........................................................................................................................205283.4.4 Soft/Softer Handoff Addition................................................................................................213293.4.5 Soft/softer Handoff Removal................................................................................................213303.4.6 Cell Removal by a Target BS...............................................................................................213313.4.7 Call Clearing .......................................................................................................................214323.4.8 Handoff Performed ..............................................................................................................214333.4.9 Access Handoff and Channel Assignment into Soft Handoff ...............................................214343.4.10 Soft/Softer Handoff of High Speed Packet Data ..................................................................21535

3.4.10.1Soft/Softer Handoff of Forward Link Bursts of Data ..........................................................................215363.4.10.2Soft/Softer Handoff of Reverse Link Bursts of Data ...........................................................................21637

3.5 HANDOFF CALL FLOWS ................................................................................................................217383.5.1 UNUSED SECTION ............................................................................................................217393.5.2 Handoff Call Flows..............................................................................................................21740

3.5.2.1 Hard Handoff (via MSC).....................................................................................................................217413.5.2.3 Soft/softer Handoff Using Direct BS to BS (A3 and A7) Connections ...............................................22542

4. MOBILITY MANAGEMENT, AUTHENTICATION, AND PRIVACY.....................................23543

4.1 MOBILITY MANAGEMENT .............................................................................................................235444.1.1 Paging..................................................................................................................................235454.1.2 Registration and Deregistration ..........................................................................................23546

4.1.2.1 Network Initiated Registration Procedures..........................................................................................235474.1.2.2 Mobile Initiated Registration...............................................................................................................236484.1.2.3 Location Updating Request .................................................................................................................237494.1.2.4 Location Updating Accept...................................................................................................................237504.1.2.5 Location Updating Reject....................................................................................................................238514.1.2.6 Power Down Registration at the End of a Call ....................................................................................23852

4.1.3 UNUSED SECTION ............................................................................................................238534.1.4 UNUSED SECTION ............................................................................................................23854

4.2 AUTHENTICATION AND PRIVACY ..................................................................................................239554.2.1 Shared Secret Data Procedures...........................................................................................24156

4.2.1.1 SSD Update Procedure - Successful Case ...........................................................................................242574.2.1.2 SSD Update Request ...........................................................................................................................24358

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4.2.1.3 Base Station Challenge........................................................................................................................24314.2.1.4 Base Station Challenge Response........................................................................................................24424.2.1.5 SSD Update Response.........................................................................................................................2443

4.2.2 Terminal Authentication ......................................................................................................24544.2.2.1 Authentication Request .......................................................................................................................24654.2.2.2 Authentication Response .....................................................................................................................2466

4.2.3 Parameter Update ...............................................................................................................24774.2.3.1 Parameter Update Request...................................................................................................................24784.2.3.2 Parameter Update Confirm..................................................................................................................2489

4.2.4 Signaling Message Encryption ............................................................................................249104.2.5 Voice Privacy.......................................................................................................................24911

4.2.5.1 Privacy Mode Procedure .....................................................................................................................249124.2.5.2 UNUSED SECTION...........................................................................................................................250134.2.5.3 Privacy Mode Command .....................................................................................................................250144.2.5.4 Privacy Mode Complete ......................................................................................................................25115

4.3 PACKET DATA SECURITY CONSIDERATIONS .................................................................................252164.3.1 PCF-PDSN Security Association.........................................................................................25217

4.3.1.1 Computing Registration Authentication Extension Values .................................................................25218

5. LAYERS 1 & 2 AND TERRESTRIAL FACILITY MANAGEMENT.........................................25419

5.1 PHYSICAL LAYER SPECIFICATION (LAYER 1) ................................................................................254205.2 ANSI SS7 TRANSPORT SPECIFICATION (LAYER 2) .......................................................................25421

5.2.1 Field of Application .............................................................................................................255225.2.2 Message Transfer Part (MTP) Functions ............................................................................25523

5.2.2.1 General ................................................................................................................................................255245.2.2.2 Level 1 (T1.111.2)...............................................................................................................................255255.2.2.3 Level 2 (T1.111.3)...............................................................................................................................256265.2.2.4 Level 3 (T1.111.4)...............................................................................................................................256275.2.2.5 Testing and Maintenance (T1.111.7)...................................................................................................258285.2.2.6 Interface Functions ..............................................................................................................................258295.2.2.7 Overload Control (Message Throughput Congestion).........................................................................25930

5.2.3 SCCP Transport Layer Specification (SCCP Functions) ....................................................260315.2.3.1 Overview .............................................................................................................................................260325.2.3.2 Primitives (T1.112.1) ..........................................................................................................................260335.2.3.3 SCCP Messages (T1.112.2).................................................................................................................261345.2.3.4 SCCP Formats and Codes (T1.112.3) .................................................................................................262355.2.3.5 SCCP Procedures (T1.112.4) ..............................................................................................................26236

5.2.4 Use of the SCCP ..................................................................................................................264375.2.4.1 The Direct Transfer Application Part ..................................................................................................264385.2.4.2 The BS Management Application Part ................................................................................................264395.2.4.3 Connection Establishment ...................................................................................................................264405.2.4.4 Connection Release .............................................................................................................................268415.2.4.5 Abnormal SCCP Release.....................................................................................................................268425.2.4.6 SCCP Reference Generation Philosophy.............................................................................................271435.2.4.7 SCCP Transfer of DTAP and BSMAP Messages................................................................................27144

5.3 USE OF ATM (LAYER 2)...............................................................................................................276455.3.1 Field of Application .............................................................................................................276465.3.2 ATM Layer ...........................................................................................................................276475.3.3 ATM Adaptation Layer ........................................................................................................27648

5.4 NETWORK AND TRANSPORT PROTOCOLS......................................................................................277495.4.1 Signaling Connection Transport Protocol Options .............................................................277505.4.2 User Traffic Connection Transport Protocol Options .........................................................279515.4.3 TCP Transport Protocol Usage ...........................................................................................28052

5.4.3.1 General Use of TCP.............................................................................................................................280535.4.3.2 Use of TCP for the A3 and A7 Interfaces............................................................................................282545.4.3.3 Use of TCP for the A9 Interface..........................................................................................................28255

5.4.4 IP Network Protocol Usage .................................................................................................283565.4.5 UDP Transport Protocol Usage ..........................................................................................28357

5.4.5.1 UDP Transport Protocol Usage for the A11 Interface.........................................................................283585.4.5.2 UDP Transport Protocol Usage for the A9 Interface...........................................................................28359

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5.4.6 Mobile IP Protocol Usage ...................................................................................................28415.4.6.1 Mobile IP Based Tunneling Protocol ..................................................................................................2842

5.4.7 GRE Protocol Usage ...........................................................................................................28635.5 TERRESTRIAL CIRCUIT MANAGEMENT PROCEDURES ...................................................................2884

5.5.1 Terrestrial Circuit Allocation/Deallocation ........................................................................28855.5.1.1 A2 Terrestrial Circuit Allocation.........................................................................................................28865.5.1.2 A3 Connection Establishment .............................................................................................................2887

5.5.2 Blocking/Unblocking ...........................................................................................................28985.5.2.1 A2 Terrestrial Circuit Blocking/Unblocking .......................................................................................2899

5.5.3 Reset Circuit Procedure.......................................................................................................292105.5.3.1 A1 Reset Circuit (at the BS) ................................................................................................................292115.5.3.2 A1 Reset Circuit Acknowledge (from MSC).......................................................................................293125.5.3.3 A1 Reset Circuit (at the MSC) ............................................................................................................294135.5.3.4 A1 Reset Circuit Acknowledge (from BS) ..........................................................................................29414

5.5.4 Global System Reset.............................................................................................................296155.5.4.1 A1 Reset ..............................................................................................................................................296165.5.4.2 A1 Reset Acknowledge .......................................................................................................................297175.5.4.3 A1 Global Reset Examples..................................................................................................................298185.5.4.4 UNUSED SECTION...........................................................................................................................303195.5.4.5 UNUSED SECTION...........................................................................................................................303205.5.4.6 UNUSED SECTION...........................................................................................................................303215.5.4.7 A7-Reset..............................................................................................................................................303225.5.4.8 A7-Reset Acknowledge .......................................................................................................................303235.5.4.9 A7 Global Reset Examples..................................................................................................................30424

5.5.5 Tandem Free Operation.......................................................................................................308255.5.5.1 Transcoder Control Request ................................................................................................................308265.5.5.2 Transcoder Control Acknowledge.......................................................................................................30927

5.5.6 UNUSED SECTION ............................................................................................................30928

6. MESSAGES, INFORMATION ELEMENTS, AND TIMER DEFINITIONS.............................31029

6.1 MESSAGE DEFINITIONS .................................................................................................................310306.1.1 Generic Message Formats ...................................................................................................31031

6.1.1.1 A1 Message Header.............................................................................................................................310326.1.1.2 Message Body, Coding, and Ordering of Elements.............................................................................313336.1.1.3 Forward Compatibility Guidelines ......................................................................................................31434

6.1.2 Call Processing Message Formats ......................................................................................318356.1.2.1 Complete Layer 3 Information ............................................................................................................318366.1.2.2 CM Service Request ............................................................................................................................319376.1.2.3 Paging Request ....................................................................................................................................329386.1.2.4 Paging Response .................................................................................................................................333396.1.2.5 UNUSED SECTION...........................................................................................................................341406.1.2.6 UNUSED SECTION...........................................................................................................................341416.1.2.7 UNUSED SECTION...........................................................................................................................341426.1.2.8 UNUSED SECTION...........................................................................................................................341436.1.2.9 UNUSED SECTION...........................................................................................................................341446.1.2.10Connect ...............................................................................................................................................342456.1.2.11UNUSED SECTION...........................................................................................................................342466.1.2.12Progress ...............................................................................................................................................343476.1.2.13UNUSED SECTION...........................................................................................................................344486.1.2.14UNUSED SECTION...........................................................................................................................344496.1.2.15Assignment Request ............................................................................................................................345506.1.2.16Assignment Complete..........................................................................................................................351516.1.2.17Assignment Failure..............................................................................................................................353526.1.2.18UNUSED SECTION...........................................................................................................................353536.1.2.19UNUSED SECTION...........................................................................................................................354546.1.2.20Clear Request ......................................................................................................................................355556.1.2.21Clear Command...................................................................................................................................357566.1.2.22Clear Complete....................................................................................................................................359576.1.2.23UNUSED SECTION...........................................................................................................................359586.1.2.24Alert With Information........................................................................................................................360596.1.2.25UNUSED SECTION...........................................................................................................................36160

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6.1.2.26UNUSED SECTION...........................................................................................................................36116.1.2.27UNUSED SECTION...........................................................................................................................36126.1.2.28BS Service Request .............................................................................................................................36136.1.2.29BS Service Response...........................................................................................................................3634

6.1.3 Supplementary Services Message Formats..........................................................................36556.1.3.1 UNUSED SECTION...........................................................................................................................36566.1.3.2 UNUSED SECTION...........................................................................................................................36576.1.3.3 UNUSED SECTION...........................................................................................................................36586.1.3.4 UNUSED SECTION...........................................................................................................................36596.1.3.5 UNUSED SECTION...........................................................................................................................365106.1.3.6 UNUSED SECTION...........................................................................................................................365116.1.3.7 Flash with Information ........................................................................................................................366126.1.3.8 Flash with Information Ack.................................................................................................................369136.1.3.9 Feature Notification.............................................................................................................................370146.1.3.10Feature Notification Ack .....................................................................................................................374156.1.3.11PACA Command.................................................................................................................................375166.1.3.12PACA Command Ack .........................................................................................................................376176.1.3.13PACA Update......................................................................................................................................377186.1.3.14 PACA Update Ack...........................................................................................................................38019

6.1.4 Mobility Management Message Formats.............................................................................381206.1.4.1 Authentication Request .......................................................................................................................381216.1.4.2 Authentication Response .....................................................................................................................385226.1.4.3 User Zone Update...............................................................................................................................388236.1.4.4 SSD Update Request ...........................................................................................................................389246.1.4.5 Base Station Challenge........................................................................................................................390256.1.4.6 Base Station Challenge Response........................................................................................................391266.1.4.7 SSD Update Response.........................................................................................................................392276.1.4.8 Location Updating Request .................................................................................................................393286.1.4.9 Location Updating Accept...................................................................................................................399296.1.4.10Location Updating Reject....................................................................................................................400306.1.4.11Parameter Update Request...................................................................................................................401316.1.4.12Parameter Update Confirm..................................................................................................................401326.1.4.13UNUSED SECTION...........................................................................................................................402336.1.4.14 UNUSED SECTION........................................................................................................................402346.1.4.15UNUSED SECTION...........................................................................................................................402356.1.4.16UNUSED SECTION...........................................................................................................................402366.1.4.17UNUSED SECTION...........................................................................................................................402376.1.4.18Privacy Mode Command .....................................................................................................................402386.1.4.19Privacy Mode Complete ......................................................................................................................40439

6.1.5 Handoff Message Formats...................................................................................................405406.1.5.1 UNUSED SECTION...........................................................................................................................405416.1.5.2 UNUSED SECTION...........................................................................................................................405426.1.5.3 UNUSED SECTION...........................................................................................................................405436.1.5.4 Handoff Required ................................................................................................................................406446.1.5.5 Handoff Request..................................................................................................................................416456.1.5.6 Handoff Request Acknowledge ...........................................................................................................427466.1.5.7 Handoff Failure ...................................................................................................................................432476.1.5.8 Handoff Command ..............................................................................................................................433486.1.5.9 Handoff Required Reject .....................................................................................................................441496.1.5.10Handoff Commenced...........................................................................................................................442506.1.5.11Handoff Complete ...............................................................................................................................443516.1.5.12Handoff Performed..............................................................................................................................444526.1.5.13UNUSED SECTION...........................................................................................................................445536.1.5.14UNUSED SECTION...........................................................................................................................44554

6.1.6 Facility Management Message Formats..............................................................................446556.1.6.1 UNUSED SECTION...........................................................................................................................446566.1.6.2 Block ...................................................................................................................................................446576.1.6.3 Block Acknowledge ............................................................................................................................448586.1.6.4 Unblock ...............................................................................................................................................448596.1.6.5 Unblock Acknowledge ........................................................................................................................450606.1.6.6 Reset ....................................................................................................................................................451616.1.6.7 Reset Acknowledge .............................................................................................................................45262

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6.1.6.8 Reset Circuit ........................................................................................................................................45316.1.6.9 Reset Circuit Acknowledge .................................................................................................................45526.1.6.10 Transcoder Control Request ...............................................................................................................45636.1.6.11 Transcoder Control Acknowledge......................................................................................................45646.1.6.12UNUSED SECTION...........................................................................................................................45756.1.6.13UNUSED SECTION...........................................................................................................................45766.1.6.14UNUSED SECTION...........................................................................................................................4577

6.1.7 Application Data Delivery Service (ADDS) Message Formats ...........................................45886.1.7.1 ADDS Page .........................................................................................................................................45896.1.7.2 ADDS Transfer....................................................................................................................................462106.1.7.3 ADDS Deliver .....................................................................................................................................467116.1.7.4 ADDS Page Ack..................................................................................................................................470126.1.7.5 ADDS Deliver Ack..............................................................................................................................47313

6.1.8 Error Handling Messages....................................................................................................474146.1.8.1 Rejection .............................................................................................................................................47415

6.1.9 A3 Interface Message Formats ............................................................................................477166.1.9.1 A3-Connect .........................................................................................................................................477176.1.9.2 A3-Connect Ack..................................................................................................................................481186.1.9.3 A3-Remove .........................................................................................................................................483196.1.9.4 A3-Remove Ack ..................................................................................................................................486206.1.9.5 A3-Drop ..............................................................................................................................................488216.1.9.6 A3-Propagation Delay Measurement Report.......................................................................................490226.1.9.7 A3-IS-95 FCH Forward.......................................................................................................................492236.1.9.8 A3-IS-95 FCH Reverse........................................................................................................................493246.1.9.9 A3-IS-2000 FCH Forward...................................................................................................................494256.1.9.10 A3-IS-2000 FCH Reverse...................................................................................................................495266.1.9.11A3-Physical Transition Directive ........................................................................................................496276.1.9.12A3-PhysicalTransition Directive Ack..................................................................................................499286.1.9.13A3-IS-2000 DCCH Forward................................................................................................................502296.1.9.14 A3-IS-2000 DCCH Reverse ...............................................................................................................503306.1.9.15A3-Traffic Channel Status...................................................................................................................504316.1.9.16A3-IS-2000 SCH Forward...................................................................................................................507326.1.9.17 A3-IS-2000 SCH Reverse...................................................................................................................50833

6.1.10 A9 Interface Message Formats ............................................................................................509346.1.10.1A9-Setup-A8 .......................................................................................................................................509356.1.10.2A9-Connect-A8 ...................................................................................................................................513366.1.10.3A9-Disconnect-A8...............................................................................................................................516376.1.10.4A9-Release-A8 ....................................................................................................................................519386.1.10.5A9-Release-A8 Complete....................................................................................................................522396.1.10.6A9-BS Service Request .......................................................................................................................523406.1.10.7A9-BS Service Response.....................................................................................................................525416.1.10.8A9-AL Connected ...............................................................................................................................526426.1.10.9A9-AL Connected Ack........................................................................................................................528436.1.10.10 A9-AL Disconnected........................................................................................................................529446.1.10.11 A9-AL Disconnected Ack ................................................................................................................53145

6.1.11 A11 Interface Message Formats ..........................................................................................532466.1.11.1A11-Registration Request ...................................................................................................................532476.1.11.2A11-Registration Reply.......................................................................................................................536486.1.11.3A11-Registration Update.....................................................................................................................540496.1.11.4 A11-Registration Acknowledge .......................................................................................................54350

6.1.12 A7 Interface Message Formats ............................................................................................546516.1.12.1A7-Handoff Request............................................................................................................................546526.1.12.2A7-Handoff Request Ack ....................................................................................................................556536.1.12.3A7-Drop Target ...................................................................................................................................561546.1.12.4A7-Drop Target Ack............................................................................................................................563556.1.12.5A7-Target Removal Request ...............................................................................................................565566.1.12.6A7-Target Removal Response .............................................................................................................568576.1.12.7UNUSED SECTION...........................................................................................................................570586.1.12.8UNUSED SECTION...........................................................................................................................570596.1.12.9UNUSED SECTION...........................................................................................................................570606.1.12.10 A7- Source Transfer Performed .......................................................................................................571616.1.12.11 A7-Reset ..........................................................................................................................................57362

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6.1.12.12 A7-Reset Acknowledge....................................................................................................................57416.1.12.13 A7-Paging Channel Message Transfer .............................................................................................57526.1.12.14 A7-Paging Channel Message Transfer Ack......................................................................................57836.1.12.15 A7-Access Channel Message Transfer .............................................................................................57946.1.12.16 A7-Access Channel Message Transfer Ack .....................................................................................58156.1.12.17 A7-Burst Request .............................................................................................................................58266.1.12.18 A7-Burst Response ..........................................................................................................................58876.1.12.19 A7-Burst Commit.............................................................................................................................5928

6.2 INFORMATION ELEMENT DEFINITIONS ..........................................................................................59696.2.1 Generic Information Element Encoding ..............................................................................59610

6.2.1.1 Conventions.........................................................................................................................................596116.2.1.2 Information Element Identifiers ..........................................................................................................597126.2.1.3 A1 Interface Information Element Types ............................................................................................612136.2.1.4 A3 and A7 Interface Information Elements.........................................................................................615146.2.1.5 Additional Coding and Interpretation Rules for Information Elements...............................................615156.2.1.6 Cross Reference of Information Elements With Messages..................................................................61716

6.2.2 Information Elements...........................................................................................................638176.2.2.1 Message Discrimination ......................................................................................................................638186.2.2.2 Data Link Connection Identifier (DLCI) .............................................................................................639196.2.2.3 Length Indicator (LI)...........................................................................................................................639206.2.2.4 Message Type......................................................................................................................................640216.2.2.5 Message Type II ..................................................................................................................................644226.2.2.6 Channel Number..................................................................................................................................646236.2.2.7 Channel Type ......................................................................................................................................647246.2.2.8 RF Channel Identity ............................................................................................................................649256.2.2.9 SID ......................................................................................................................................................651266.2.2.10IS-95 Channel Identity.........................................................................................................................652276.2.2.11UNUSED SECTION...........................................................................................................................653286.2.2.12Encryption Information .......................................................................................................................654296.2.2.13Voice Privacy Request ........................................................................................................................656306.2.2.14Physical Channel Info .........................................................................................................................657316.2.2.15Classmark Information Type 2 ............................................................................................................659326.2.2.16Mobile Identity....................................................................................................................................663336.2.2.17Slot Cycle Index ..................................................................................................................................666346.2.2.18Priority.................................................................................................................................................666356.2.2.19Cause ...................................................................................................................................................669366.2.2.20Cell Identifier ......................................................................................................................................673376.2.2.21Cell Identifier List ...............................................................................................................................676386.2.2.22Circuit Identity Code...........................................................................................................................676396.2.2.23Circuit Identity Code Extension ..........................................................................................................677406.2.2.24Unused.................................................................................................................................................677416.2.2.25Downlink Radio Environment.............................................................................................................678426.2.2.26Unused.................................................................................................................................................679436.2.2.27Unused.................................................................................................................................................679446.2.2.28Unused.................................................................................................................................................679456.2.2.29Unused.................................................................................................................................................679466.2.2.30PDSN IP Address ................................................................................................................................680476.2.2.31Handoff Power Level...........................................................................................................................681486.2.2.32USER Zone ID ....................................................................................................................................682496.2.2.33Reverse Pilot Gating Rate....................................................................................................................683506.2.2.34IS-2000 Channel Identity.....................................................................................................................684516.2.2.35Response Request................................................................................................................................686526.2.2.36IS-95 MS Measured Channel Identity .................................................................................................686536.2.2.37Calling Party ASCII Number..............................................................................................................687546.2.2.38Layer 3 Information.............................................................................................................................690556.2.2.39Protocol Discriminator ........................................................................................................................691566.2.2.40Reserved-Octet ....................................................................................................................................691576.2.2.41Location Updating Type......................................................................................................................692586.2.2.42Authentication Confirmation Parameter (RANDC).............................................................................693596.2.2.43Location Area Identification................................................................................................................694606.2.2.44Reject Cause ........................................................................................................................................695616.2.2.45Authentication Challenge Parameter (RAND/RANDU/RANDBS/RANDSSD).................................69662

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6.2.2.46Authentication Response Parameter (AUTHR/AUTHU/AUTHBS) ...................................................69716.2.2.47Authentication Parameter COUNT......................................................................................................69826.2.2.48Message Waiting Indication ................................................................................................................69936.2.2.49Progress Indicator................................................................................................................................70046.2.2.50 Signal..................