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Asterisk 1.4 - the Professional's Guide : the Professional's Guide.
Implementing, Administering, and Consulting on Commercial IP Telephony Solutions.
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Otros Autores: | , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Birmingham :
Packt Publishing,
2009.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Asterisk 1.4; Asterisk 1.4; Credits; Foreword; About the Authors; About the Reviewers; Preface; Reviewing the basics; No compromise; What this book covers; Onwards; Conventions; Reader feedback; Customer support; Downloading the example code for the book; Errata; Piracy; Questions; 1. The Dialplan; Dialplan location; Extensions and contexts; Pattern matching; Why use contexts?; Call barring made simple; Time and day call routing; Variables; Inheritance of channel variables through the dialplan; Using the AstDB; Dialplan features and additions; func_devstate.
- What can we use the DEVSTATE() function for?Outgoing trunk selection; Calling extensions; Setting lights; Boosting outgoing call capacity; Using multiple broadband lines; Configuration overview; Setting up the routing in Linux; Configuring Asterisk; Explanation of the macro; Downsides; System() application; Summary; 2. Network Considerations when Implementing Asterisk; Centralized and distributed installations; Centralized installations; Distributed solutions; Latency and jitter; Jitterbuffer; Echo; Do your homework; SLAs are for everyone; Achieving the goal; Backups; To share or not to share.
- Ensuring qualityWhen things go wrong; Red; Amber; Green; Increasing resilience; Summary; 3. Call Routing with Asterisk; Routing methods; Where to start; Internal calls; Local calls; National calls; International calls; Alternative options; ENUM; DUNDi; Types of routing; Routing techniques; Summary; 4. Call Centers--Queues and Recording; Asterisk queues; Queue gotchas; A practical queue; Using queues to cascade calls; Call recording--the issues; Show-stoppers; VoIP recording approaches; Impact of VoIP on recording systems; Hardware convergence; Distributed call centers; Home working.
- VoIP recording challengesRouting; Bandwidth; Encryption; Solutions; Asterisk call center solutions; How VICIDIAL works; Handling inbound calls; Installation; Timing sources; Scalability; Summary; 5. Asterisk and Speech Technology; Why speech-enable?; Types of speech technologies; Automatic Speech Recognition (ASR); Isolated Word Recognition; Connected Word Recognition; Natural Language Recognition; Text-to-Speech (TTS); Speaker Verification and Identification (SVI); MRCP; Implementation considerations; ASR and Asterisk; Installing LumenVox speech recognition with Asterisk.
- Checking that things are workingSpeechCreate(); SpeechLoadGrammar (yesno, /etc/lumenvox/Lang/BuiltinGrammars/ABNFBoolean.gram); SpeechActivateGrammar(yesno); SpeechBackground(beep); Verbose(1,Result was {SPEECH_TEXT(0)}); Verbose(1,Confidence was {SPEECH_SCORE(0)}); SpeechStart(); SpeechDeactivateGrammar(label); SpeechUnloadGrammar(label); SpeechDestroy(); {SPEECH(results)}; Grammar files; Implementation advice for ASR; TTS with Asterisk; Implementation advice for TTS; Summary; 6. Call Accounting and Billing; Call Data Records (CDRs); CDR frontends; Call accounting.