Carrier Grade Voice over IP VoIP 技術(shù)與應(yīng)用

Preface                   
                   
 *Chapter1　Introduction　1                   
 *Introduction　2                   
 *What Does Carrier Grade Mean?　2                   
 *What Does VolP Mean?　3                   
 *A Little About IP　4                   
 *Why VolP?　5                   
 ·Why Carry Voice?　5                   
 ·Why Use IP for Voice?　6                   
 ·Lower Equipment Cost　7                   
 ·Voice/Data Integration and Advanced Services　9                   
 ·Lower Bandwidth Requirements　12                   
 ·The Widespread Availability of IP　13                   
 *The VolP Market　14                   
 *VolP Challenges　15                   
 ·Speech Quality　16                   
 ·Network Reliability and Scalability　19                   
 ·Managing Access and Prioritizing Traffic　20                   
 *VolP Implementations　20                   
 ·IP-Based PBX Solutions　21                   
 ·IP Voice Mail　22                   
 ·Hosted PBX Solutions　22                   
 ·IP Call Centers　23                   
 ·IP User Devices　24                   
 *Overview of Following Chapters　24                   
                   
 Chapter2　Transporting Voice by Using IP　29                   
 *Introduction　30                   
 *Overview of the IP Protocol Suite　31                   
 *Internet Standards and the Standards Process　34                   
 ·The Internet Society　34                   
 ·The Internet Architecture Board(IAB)　35                   
 ·The Internet Engineering Task Force (IETF)　35                   
 ·The Internet Engineering Steering Group(IESG)　36                   
 ·The Internet　Assigned Numbers Authority(IANA)　36                   
 ·The Internet Standards Process　36                   
 *IP　38                   
 ·The IP Header　38                   
 ·IP Routing　39                   
 *The Transmission Control Protocol(TCP)　44                   
 ·The TCP Header　45                   
 ·TCP Connections　47                   
 *The User Datagram Protocol(UDP)　49                   
 ·Voice over UDP, not TCP　51                   
 *The Real-Time Transport Protocol(RTP)　52                   
 ·RTP Payload Formats　53                   
 ·The RTP Header　57                   
 ·Mixers and Translators　61                   
 *The RTP Control Protocol(RTCP)　62                   
 ·RTCP Sender Report(SR)　64                   
 ·RTCP Receiver Report(RR)　67                   
 ·RTCP Source Description Packet(SDES)　67                   
 ·RTCP BYE Packet　68                   
 ·Application-Defined RTCP Packet　69                   
 ·Calculating Round-Trip Time　70                   
 ·Calculating Jitter　70                   
 ·Timing of RTCP Packets　71                   
 *IP Multicast　72                   
 *IP Version 6　74                   
 ·IP Version 6 Header　74                   
 ·IP Version 6 Addresses　75                   
 ·IP Version 6 Header Extensions　78                   
 ·Interoperating IP Version 4 and IP Version6　81                   
 *Other Supporting Functions and Protocols　82                   
 ·IP Security　83                   
 ·Domain Name Service (DNS)　84                   
 ·Path MTU Discovery　85                   
                   
 Chapter3　Speech-Coding Techniques　87                   
 *Introduction　88                   
 *Voice Quality　89                   
 *A Little Abort Speech　90                   
 *Voice Sampling　93                   
 ·Quantization　94                   
 ·Types of Speech Coders　96                   
 *G.711　97                   
 *Adaptive DPCM(ADPCM)　98                   
 *Analysis-by-Synthesis(ABS) Codecs　98                   
 ·G.728 LD-CELP　99                   
 ·G.723.1 ACELP　101                   
 ·G.729　103                   
 *Selecting Codecs　105                   
 *Cascaded Codecs　106                   
 *Tones,Signals,and DTMF Digits　107                   
                   
 Chapter4　H.323　111                   
 *Introduction　112                   
 *The H.323 Architecture　113                   
 *Overview of H.323 Signaling　115                   
 ·Overview of H.323 Protocols　117                   
 ·H.323 Addressing　119                   
 ·Codecs　120                   
 *RAS Signaling　120                   
 ·Gatekeeper Discovery　122                   
 ·Endpoint Registration and Registration Cancellation　125                   
 ·Endpoint Location　127                   
 ·Admission　128                   
 ·Bandwidth Change　130                   
 ·Status　132                   
 ·Disengage　133                   
 ·Resource Availability　134                   
 ·Request in Progress　134                   
 *Call Signaling　134                   
 ·Setup　137                   
 ·Call Proceeding　137                   
 ·Alerting　138                   
 ·Progress　138                   
 ·Connect　138                   
 ·Release Complete　138                   
 ·Facility　139                   
 ·Interaction Between Call Signaling and H.245 Control Signaling　139                   
 *Call Scenarios　140                   
 ·Basic Call Without Gatekeepers　140                   
 ·A Basic Call With Gatekeepers and Direct-Endpoint Call Signaling　141                   
 ·A Basic Call With Gatekeeper/Direct-Routed Call Signaling　142                   
 ·A Basic Call With Gatekeeper-Routed Call Signaling　144                   
 ·Optional Called-Endpoint Signaling　146                   
 *H.245 Control Signaling　148                   
 ·H.245 Message Groupings　148                   
 ·The Concept of Logical Channels　149                   
 ·H.245 Procedures　149                   
 ·Fast-Connect Procedure　155                   
 ·H.245 Message Encapsulation　158                   
 *Conference Calls　160                   
 ·A Pre-Arranged Conference　160                   
 ·An Ad-Hoc Conference　160                   
                   
 Chapter5　The Session Initiation Protocol(SIP)　163                   
 *Introduction　164                   
 *The Popularity of SIP　164                   
 *SIP Architecture　165                   
 ·SIP Network Entities　166                   
 ·SIP Call Establishment　168                   
 ·SIP Advantages over Other Signaling Protocols　169                   
 *Overview of SIP Messaging Syntax　170                   
 ·SIP Requests　172                   
 ·SIP Responses　173                   
 ·SIP Addressing　176                   
 ·SIP Addressing　177                   
 ·Message Headers　177                   
 *Examples off SIP Message Sequences　184                   
 ·Registration　184                   
 ·Invitation　186                   
 ·Termination of a Call　188                   
 *Redirect and Proxy Servers　188                   
 ·Redirect Servers　189                   
 ·Proxy Servers　191                   
 *The Session Description Protocol(SDP)　195                   
 ·The Structure of SDP　195                   
 ·SDP Syntax　197                   
 *Usage of SDP With SIP　203                   
 ·Negotiation of Media　204                   
 *Usage of SIP for Features and Services　206                   
 ·Call Forwarding　208                   
 ·Consultation Hold　209                   
 *Sip Extensions and Enhancements　211                   
 ·The SIP 183 Session-Progress Message　212                   
 ·The SIP INFO Method　213                   
 ·The SIP-Supported Header　214                   
 ·Reliability of Provisional Responses　216                   
 ·Integration of SIP Signaling and Resource Management　218                   
 *Interworking　223                   
 ·PSTN Interworking　224                   
 ·Interworking With H.323　227                   
 *Summary　231                   
                   
 Chapter6　Media Gateway Control and the Softswitch Architecture　233                   
 *Introduction　234                   
 *Separation of Media and Call Control　234                   
 *Softswitch Architecture　236                   
 *Requirements for Media Gateway Control　238                   
 *Protocols for Media Gateway Control　239                   
 *MGCP　240                   
 ·The MGCP Model　241                   
 ·MGCP Endpoints　241                   
 ·MGCP Calls and Connections　243                   
 ·Overview of MGCP Commands　244                   
 ·Overview of MGCP Responses　249                   
 ·Command and Response Details　251                   
 ·Call Setup Using MGCP　257                   
 ·Call Setup Based on Detected Events　260                   
 ·MGCP Events,Signals,and Packages　263                   
 ·Internetworking between MGCP and SIP　264                   
 ·MGCP Call Release　266                   
 *MEGACO/H.248　267                   
 ·MEGACO Architecture　267                   
 ·Overview of MEGACO Commands　272                   
 ·Descriptors　274                   
 ·Packages　283                   
 ·MEGACO Command and Response Details　284                   
 ·Call Setup Using MEGACO　290                   
 ·MEGACO Call Setup Based on Detected Events　295                   
 ·Interworking between MEGACO and SIP　301                   
                   
 Chapter7　VolP and SS7　303                   
 *Introduction　304                   
 *The SS7 Protocol Suite　306                   
 ·The Message Transfer Part　306                   
 ·ISUP and SCCP　307                   
 *SS7 Network Architecture　308                   
 ·Signaling Points　310                   
 ·Signal Transfer Point　310                   
 ·Service Control Point(SCP)　311                   
 ·Message Signal Units(MSUs)　312                   
 ·SS7 Addressing　313                   
 *The ISDN User Part(ISUP)　314                   
 *Performance Requirements for SS7　316                   
 *Sigtran　318                   
 ·Sigtran Architecture　320                   
 ·SCTP　325                   
 ·M3UA Operation　337                   
 ·M2UA Operation　345                   
 *Interworking SS7 and VolP Architectures　347                   
 ·Interworking Softswitch and SS7　347                   
 ·Interworking H.323 and SS7　352                   
                   
 Chapter8　Quality of Service　355                   
 *Introduction　356                   
 *The Need for QOS　356                   
 ·End-to-End QOS　358                   
 ·It's Not Just the Network　359                   
 *Overview of QOS Solutions　360                   
 ·More Bandwidth　360                   
 ·QOS Protocols and Architectures　361                   
 ·QOS Policies　365                   
 *The Resource-Reservation Protocol(RSVP)　365                   
 ·RSVP Syntax　366                   
 ·Establishing Reservations　367                   
 ·Reservation Errors　378                   
 ·Guaranteed Service　378                   
 ·Controlled-Load Service　379                   
 ·Removing Reservations and the Use of Soft State　380                   
 *DiffServ　381                   
 ·DiffServ Architecture　382                   
 ·The Need for Service-Level Agreements(SLAs)　383                   
 ·Per-Hop Behaviors(PHBs)　387                   
 *MPLS Architecture　388                   
 ·FECs and Labels　390                   
 ·Actions at LSRs　392                   
 ·Label-Switched Paths　394                   
 ·MPLS Traffic Engineering　394                   
 *Combining QOS Solutions　401                   
 *Further Information　401                   
                   
 Chapter9　Accessing the Network　403                   
 *Introduction　404                   
 *Modems　404                   
 *ISDN　406                   
 ·BRI　407                   
 ·Primary Rate Interface(PRI)　409                   
 ·The Future of ISDN　409                   
 *Digital Subscriber Line(DSL)　410                   
 ·DSL Variants　411                   
 ·The ADSL Architecture　415                   
 ·DSL Modulation　418                   
 ·DSL Challenges　419                   
 *Using the Cable TV Infrastructure　421                   
 ·Hybrid-Fiber Coax　421                   
 ·Data Transmission over the HFC Network　422                   
 ·The Packet Cable Architecture　423                   
 *Fixed Wireless Access　425                   
 ·LMDS　425                   
 *Mobile Services　427                   
 ·The Evolution to 3G for GSM　428                   
 ·The Evolution to 3G for IS-136 TDMA　431                   
 ·The Evolution to 3G for IS-95 CDMA　432                   
                   
 Chapter10　Fax over IP(FolP)　433                   
 *Introduction　434                   
 *Today's Fax Service　434                   
 ·T.4 and T.30　434                   
 *Real-Time Fax　438                   
 ·Sending Fax Messages over IP　440                   
 ·Fax and H.323　445                   
 ·TCP or UDP　446                   
 ·Fax and SIP,SDP,and RTP　447                   
 *E-Mail-Based Fax　448                   
                   
 *References　451                   
 *Glossary　459                   
 *Index　467