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CHAPTER 1Introductlon1

Introduction1

Purpose of a Signaling System1

Transport Systems and Signaling Systems2

The Blurring of the Distinction between Transportand Signaling Networks3

Narrowband Signaling Transport and Networks3

TheT1 System3

X.25 and Packet Switching Systems4

Broadband Signaling Networks6

Problems with Narrowband Signaling6

SS7 Systems6

Why Not Just Use SS7？7

Summary7

CHAPTER 2ISDN and B-ISDN Architecture8

Introduction8

Interfaces and Functional Groupings8

Reference Points10

ISDN Logical Channel Concept11

Typical ISDN Configuration12

The ISDN Layers13

What ls B-ISDN？14

B-lSDN Functional Entities and Reference Points16

The B-ISDN Planes and Layers16

Maior Functions of the Layers18

Classification of Broadband Services21

Summary23

CHAPTER 3ATM Architecture24

I ntroduction24

ATM Architecture24

ATM and B-ISDN26

Whv the Interest in ATM？26

The ATM Layers27

Virtual Circuits with the VPCI,VPI,and VCI29

VirtuaI Path Connection ldentifier(VPCI)32

The ATM Cell and Cell Header32

A Closer Look at AAL34

Formats of the AAL PDUs36

Summary38

Early Signaling39

Introduction39

CHAPTER 4Signaling System Number 7(SS7)Architecture39

Common Channel Signaling40

SS7 Fundamentals40

Example of an SS7 Topology41

Functions of the SS7 Nodes41

The Service Switching Point(SSP)43

The Signaling Transfer Point(STP)43

The Service Control Point(SCP)43

The SS7 Levels(Layers)44

SS7 ldentifiers and Numbering Scheme47

Global Title Addressing and Translation49

Summary49

CHAPTER 5Addressing,SAPs,Primitives,and PDUs50

Introduction50

Explicit Addresses and Labels50

A Short Treatise on Routing51

The ATM Address Scheme52

The E.164 Address Scheme55

Service Access Points(SAPS)56

How Primitives(Service Definitions)Are Used57

Relationships of Service Definitions and ProtocolSpecifications58

Connection Mapping58

Other Key Concepts60

ATM s Use of the OSI Model60

The Broadband Signaling Stacks and the User Layers60

Summary63

CHAPTER 6SAAL,SSCOP,and SSCF64

Introduction64

Position of SAAL in the Broadband Signaling Layers64

The Protocol Stack in More Detail65

Functions of SAAL67

Functions of SSCF67

Functions of SSCOP69

Functions of SSCS Layer Management(LM)70

The SAAL Primitives and Signals Operations71

Depictions of the Layers and Their Associated Primitivesand Signals72

Signals between SSCOP-SSCF and SSCOP-LayerManagement76

Signals between Layer Management and SSCF77

Signals between SSCOP and CPCS78

The SSCOP Operations in More Detail79

The ErrorCodes79

SSCOP PDUs80

Examples of SSCOP“Housekeeping”Operations83

Examples of SSCOP Transferring Signaling Traffic84

Parameters in the Primitives and PDUs90

CHAPTER 7UNI Signaling92

Introduction92

Broadband Signaling Stacks92

UNI Messages and Information Elements93

Message Format94

The Messages95

The Information Elements(IEs)95

Overview of UNI Operations95

The Q.2931 Timers98

The UNI Operations in More Detail100

The Connection Establishment Operation100

The Connection Release Operation101

The Restart Operation102

The Status Inquiry Operation103

The Add Partv Operation103

The Q.931 Message Information Elements in MoreDetail106

The Drop Party Operation106

AAL Information Element107

Broadband Low Layer Information Element109

ATM Forum UNI Version 4.0 Variations112

Summarv112

CHAPTER 8B-ISUP Signaling113

Introduction113

Purpose of B-ISUP114

What B-ISUP Does Not Do114

Bandwidth Analysis and Path Discovery115

Position of B-ISUP in the Broadband Signaling Layers116

The SS7 MTP Support to B-ISUP116

Overview of the B-ISUP Operations117

Trunk Groups and VPCIs118

B-ISUP NNI Messages and Parameters119

Setting up the Virtual Circuits119

The Messages120

Examples of B-ISUP Operations123

Parameters in the Messages123

The B-ISUP Architecture in More Detail127

Appendix 8A:Parameters Used in B-ISUP Messages130

Summary130

Appendix 8B:B-ISUP Interfaces,Pnmitives,and PrimitiveParameters138

Introduction144

CHAPTER 9Operations Between UNI and NNI144

Typical Call Setup and Release Operations144

Mapping between the UNI and NNI Messagesand Information Elements147

Summary147

Introduction148

CHAPTER 10Other Broadband Signaling Operationsand Performance Requirements148

Configuration Options148

Point-to-Multipoint Calls152

Signaling Identifiers(SIDs)152

Add Party Operations154

Performance Requirements for the Signaling Virtual ChannelConnection(VCC)155

Summary158

CHAPTER 11Private Network-Network Interface(PNNI)159

Introduction159

Whv Another NNI Protocol？159

Overview of PNNI Protocol160

Unique Aspects of PNNI Signaling vis-a-vis Q.2931161

PNNI Signaling Specification Model162

Terms and Concepts163

PNNI Metrics165

Metric Aggregation167

Horizontal and Outside Links171

PNNI Hierarchy Example172

PNNI Signaling Messages175

A Look at the SETUP Message InformationElements175

PNNI Available Bit Rate(ABR)Descriptors177

Designated Transit List(DTL)178

Soft Permanent Virtual Connection Procedures178

Information Elements for the Support of Other Services179

Designated Transit List179

Summary179

Crank Back179

Abbreviations180

References183

Index187

Primitives and Signals between SSCF and MTP372

Relationships of the SAAL Entities and MTP389