Contents
Preface xv
CHAPTER 1 Introduction
Introduction
Purpose of a Signaling System
Transport Systems and Signaling Systems
The Blurring of the Distinction between Transport
and Signaling Networks
Narrowband Signaling Transport and Networks
The T1 System
X.25 and Packet Switehing Systems
SS7 Systems
Problems with Narrowband Signaling
Broadband Signaling Networks
Why Not Just Use SS7?
Summary
CHAPTER 2 ISDN and B-ISDN Architecture
Introduction
Interfaces and Functional Groupings
Reference Points
ISDN Logical Channel Concept
Typical ISDN Configuration
The ISDN Layers
What Is B-ISDN?
B-ISDN Functional Entities and Reference Points
The B-ISDN Planes and Layers
Major Functions of the Layers
Classification of Broadband Services
Summary
CHAPTER 3 ATM Archltecture
Introduction
ATM Architecture
Why the Interest in ATM?
ATM and B-ISDN
The ATM Layers
Virtual Circuits with the VPCI, VPI, and VCI 29
Virtual Path Connection Identifier (VPCI) 32
The ATM Cell and Cell Header
A Closer Look at AAL
Formats of the AAL PDUs
Summary
CHAPTER 4 Signallng System Number 7 (SS7) Architecture
Introduction
Early Signaling
Common Channel Signaling
SS7 Fundamentals
Example of an SS7 Topology
Functions of the SS7 Nodes
The Service Switching Point (SSP)
The Signaling Transfer Point (STP)
The Service Control Point (SCP)
The 337 Levels (Layers)
337 Identifiers and Numbering 3cheme
Global Title Addressing and Translation
Summary
CHAPTER 5 Addressing, SAPs, Primltlves, and PDUs
Introduction 50
Explicit Addresses and Labels
A Short Treatise on Routing
The ATM Address Scheme
The E.164 Address Scheme
Service Access Points (SAPS)
How Primitives (Service Definitions) Are Used
Relationships of Service Definitions and Protocol
Spedfications
Connection Mapping
Other Key Concepts
ATM's Use of the OSI Model
The Broadband Signaling Stacks and the User Layers 60
Summary
CHAPTER 6 SAAL, SSCOP, and SSCF
Introduction
Position of SAAL in the Broadband Signaling Layers
The Protocol Stack in More Detail
Functions of SAAL
Functions of SSCF
Functions of SSCOP
Functions of SSCS Layer Management (LM)
The SAAL Primitives and Signals Operations
Depictions of the Layers and Their Associated Primitives
and Signals
Primitives and Signals between SSCF and MTP 3
Signals between SSCOP-SSCF and SSCOP-Layer
Management
Signals between Layer Management and SSCF
Signals between SSCOP and CPCS
The Error Codes
The SSCOP Operations in More Detail
SSCOP PDUs
Examples of SSCOP "Housekeeping" Operations
Examples of SSCOP Transferring Signaling Traffic
Relationships of the SAAL Entities and MTP 3
Parameters in the Primitives and PDUs
Summary 91
CHAPTER 7 UNI Signaling
Introduction
Broadband Signaling Stacks
UNI Messages and Infomnation Elements
Message Format
The Messages
The Information Elements (lEs)
Overview of UNI Operations
The Q.2931 Timers
The UNI Operations in More Detail
The Connection Establishment Operation
The Connection Release Operation
The Restart Operation
The Status Inquiry Operation
The Add Party Operation
The Drop Party Operation
The Q.931 Message Information Elements in More
Detail
AAL Information Element
Broadband Low Layer Information Element
ATM Forum UNI Version 4.0 Variations
Summary
CHAPTER 8 B-ISUP Signaling
Introduction
Purpose of B-ISUP
What B-ISUP Does Not Do
Bandwidth Analysis and Path Discovery
Position of B-ISUP in the Broadband Signaling Layers
The SS7 MTP Support to B-ISUP
Overview of the B-ISUP Operations
Trunk Groups and VPCIs
Setting up the Virtual Circuits
B-ISUP NNI Messages and Parameters
The Messages
Parameters in the Messages
Examples of B-ISUP Operations
The B-ISUP Architecture in More Detail
Summary
Appendix 8A: Parameters Used in B-ISUP Messages 130
Appendix 8B: B-ISUP tnterfaces, Phmitives, and Primitive
Parameters
CHAPTER 9
Operatlons Between UNI and NNI
Introduction
Typical Call Setup and Release Operations
Mapping between the UNI and NNI Messages
and Information Elements
Summary
CHAPTER 10
Other Broadband Signaling Operations
and Performance Requlrements
Introduction
Contiguration Options
Point-to-Multipoint Calls
Signaling Identifiers (SIDs)
Add Party Operations
Performance Requirements for the Signaling Virtual Channel
Connection (VCC)
Summary
CHAPTER 11 Prlvate Network-Network Interface (PNNI)
Introduction
Why Another NNI Protocol?
Overview of PNNI Protocol
Unique Aspects of PNNI Signaling vis-a-vis Q.2931 161
PNNI Signaling Specification Model
Terms and Concepts
PNNI Metrics
Metric Aggregation
Horizontal and Outside Links
PNNI Hierarchy Example
PNNI Signaling Messages
A Look at the SETUP Message Information
Elements
PNNI Available Bit Rate (ABR) Descriptors
Designated Transit List (DTL)
Soft Permanent Virtual Connection Procedures
Crank Back
Designated Transit List
Information Elements for the Support of Other Services
Summary