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14 Voice API Programming Guide — June 2005
About This Publication
• Independent Software Vendors (ISVs)
• Value Added Resellers (VARs)
• Original Equipment Manufacturers (OEMs)
How to Use This Publication
This document assumes that you are familiar with and have prior experience with Windows or
Linux operating systems and the C programming language. Use this document together with the
following: the Voice API Library Reference, the Standard Runtime Library API Programming
Guide, and the Standard Runtime Library API Library Reference.
The information in this guide is organized as follows:
• Chapter 1, “Product Description” introduces the key features of the voice library and provides
a brief description of each feature.
• Chapter 2, “Programming Models” provides a brief overview of supported programming
models.
• Chapter 3, “Device Handling” discusses topics related to devices such as device naming
concepts, how to open and close devices, and how to discover whether a device is Springware
or DM3.
• Chapter 4, “Event Handling” provides information on functions used to handle events.
• Chapter 5, “Error Handling” provides information on handling errors in your application.
• Chapter 6, “Application Development Guidelines” provides programming guidelines and
techniques for developing an application using the voice library. This chapter also discusses
fixed and flexible routing configurations.
• Chapter 7, “Call Progress Analysis” describes the components of call progress analysis in
detail. This chapter also covers differences between Basic Call Progress Analysis and
PerfectCall Call Progress Analysis.
• Chapter 8, “Recording and Playback” discusses playback and recording features, such as
encoding algorithms, play and record API functions, transaction record, and silence
compressed record.
• Chapter 9, “Speed and Volume Control” explains how to control speed and volume of
playback recordings through API functions and data structures.
• Chapter 10, “Send and Receive FSK Data” describes the two-way frequency shift keying
(FSK) feature, the Analog Display Services Interface (ADSI), and API functions for use with
this feature.
• Chapter 11, “Caller ID” describes the caller ID feature, supported formats, and how to enable
it.
• Chapter 12, “Cached Prompt Management” provides information on cached prompts and how
to use cached prompt management in your application.
• Chapter 13, “Global Tone Detection and Generation, and Cadenced Tone Generation”
describes these tone detection and generation features in detail.
• Chapter 14, “Global Dial Pulse Detection” discusses the Global DPD feature, the API
functions for use with this feature, programming guidelines, and example code.
- Voice API 1
- Contents 3
- Revision History 11
- About This Publication 13
- How to Use This Publication 14
- Related Information 15
- Product Description 17
- 1.3 Call Progress Analysis 18
- 1.5 Dial Pulse Detection 19
- 1.6 Play and Record Features 19
- 1.6.3 Transaction Record 20
- 1.6.5 Streaming to Board 20
- 1.7 Send and Receive FSK Data 21
- 1.8 Caller ID 21
- 1.9 R2/MF Signaling 21
- 1.10 TDM Bus Routing 22
- Programming Models 23
- Device Handling 25
- Event Handling 27
- Error Handling 29
- Application Development 31
- Guidelines 31
- Fixed Routing 36
- (Coupled Resources) 36
- Flexible Routing 36
- (Independent Resources) 36
- 6.4.3 DM3 Media Loads 39
- 6.5 Using Wink Signaling 41
- Call Progress Analysis 43
- CR_FAXTONE 50
- 7.5.1 Tone Detection Overview 51
- 7.5.2 Types of Tones 51
- 7.5.3 Ringback Detection 52
- 7.5.4 Busy Tone Detection 53
- 7.5.6 SIT Frequency Detection 53
- DM3 Boards 56
- Definitions on DM3 Boards 57
- CR_NOANS 64
- Springware Boards 65
- 7.11.2 Types of Tones 66
- 7.11.3 Dial Tone Detection 67
- 7.11.4 Ringback Detection 67
- 7.11.5 Busy Tone Detection 68
- 7.11.7 Loop Current Detection 68
- 7.15.1 Tri-Tone SIT Sequences 73
- First Tone 74
- Second Tone 74
- Third Tone 75
- (Springware Only) 78
- 7.16.3 Elements of a Cadence 79
- • No Ringback 81
- • Connect 81
- • No Answer 81
- 8.3 Play and Record Functions 88
- 8.5 Voice Encoding Methods 89
- 8.6 G.726 Voice Coder 91
- 8.7 Transaction Record 92
- 8.8 Silence Compressed Record 93
- 8.9.1 Overview 95
- 8.9.2 Enabling 96
- 8.10 Streaming to Board 97
- 8.11 Pause and Resume Play 99
- 8.12.3 Modes of Operation 104
- Recording and Playback 107
- Speed and Volume Control 113
- 9.5 Play Adjustment Digits 118
- Send and Receive FSK Data 121
- 10.2 ADSI Protocol 122
- 10.4 One-Way ADSI 123
- 10.3 ADSI Operation 123
- 10.5 Two-Way ADSI 124
- • Set wType to DT_ADSI 132
- Caller ID 135
- * Single Data Message 136
- ** Multiple Data Message 136
- 11.5 Error Handling 138
- Cached Prompt Management 141
- 12.2.3 Playing Cached Prompts 142
- 12.2.4 Recovering from Errors 142
- brdstrlen; 144
- Global Tone Detection and 147
- Generation 147
- API Library Functions 149
- 13.1.6 Retrieving Tone Events 151
- 13.1.9 Estimating Memory 152
- 13.2.1 Using GTG 155
- 13.2.2 GTG Functions 156
- 13.3 Cadenced Tone Generation 157
- Global Dial Pulse Detection 169
- 14.2 Global DPD Parameters 170
- 14.3 Enabling Global DPD 170
- 14.10 Global DPD Example Code 173
- R2/MF Signaling 175
- 15.4 R2/MF Signal Meanings 177
- Requirements 186
- Syntellect License Automated 187
- Attendant 187
- Building Applications 189
- 17.2 Compiling and Linking 190
- 17.2.3 Run-time Linking 191
- Glossary 193
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