User's Manual
Table Of Contents
- Contents
- Figures
- Tables
- Revision History
- About This Publication
- 1. Product Description
- 2. Programming Models
- 3. Device Handling
- 4. Event Handling
- 5. Error Handling
- 6. Application Development Guidelines
- 7. Call Progress Analysis
- 7.1 Call Progress Analysis Overview
- 7.2 Call Progress and Call Analysis Terminology
- 7.3 Call Progress Analysis Components
- 7.4 Using Call Progress Analysis on DM3 Boards
- 7.5 Call Progress Analysis Tone Detection on DM3 Boards
- 7.6 Media Tone Detection on DM3 Boards
- 7.7 Default Call Progress Analysis Tone Definitions on DM3 Boards
- 7.8 Modifying Default Call Progress Analysis Tone Definitions on DM3 Boards
- 7.9 Call Progress Analysis Errors
- 7.10 Using Call Progress Analysis on Springware Boards
- 7.11 Call Progress Analysis Tone Detection on Springware Boards
- 7.12 Media Tone Detection on Springware Boards
- 7.13 Default Call Progress Analysis Tone Definitions on Springware Boards
- 7.14 Modifying Default Call Progress Analysis Tone Definitions on Springware Boards
- 7.15 SIT Frequency Detection (Springware Only)
- 7.15.1 Tri-Tone SIT Sequences
- 7.15.2 Setting Tri-Tone SIT Frequency Detection Parameters
- 7.15.3 Obtaining Tri-Tone SIT Frequency Information
- 7.15.4 Global Tone Detection Tone Memory Usage
- 7.15.5 Frequency Detection Errors
- 7.15.6 Setting Single Tone Frequency Detection Parameters
- 7.15.7 Obtaining Single Tone Frequency Information
- 7.16 Cadence Detection in Basic Call Progress Analysis (Springware Only)
- 8. Recording and Playback
- 8.1 Overview of Recording and Playback
- 8.2 Digital Recording and Playback
- 8.3 Play and Record Functions
- 8.4 Play and Record Convenience Functions
- 8.5 Voice Encoding Methods
- 8.6 G.726 Voice Coder
- 8.7 Transaction Record
- 8.8 Silence Compressed Record
- 8.9 Recording with the Voice Activity Detector
- 8.10 Streaming to Board
- 8.11 Pause and Resume Play
- 8.12 Echo Cancellation Resource
- 9. Speed and Volume Control
- 10. Send and Receive FSK Data
- 11. Caller ID
- 12. Cached Prompt Management
- 13. Global Tone Detection and Generation, and Cadenced Tone Generation
- 13.1 Global Tone Detection (GTD)
- 13.1.1 Overview of Global Tone Detection
- 13.1.2 Global Tone Detection on DM3 Boards versus Springware Boards
- 13.1.3 Defining Global Tone Detection Tones
- 13.1.4 Building Tone Templates
- 13.1.5 Working with Tone Templates
- 13.1.6 Retrieving Tone Events
- 13.1.7 Setting GTD Tones as Termination Conditions
- 13.1.8 Maximum Amount of Memory for Tone Templates
- 13.1.9 Estimating Memory
- 13.1.10 Guidelines for Creating User-Defined Tones
- 13.1.11 Global Tone Detection Application
- 13.2 Global Tone Generation (GTG)
- 13.3 Cadenced Tone Generation
- 13.3.1 Using Cadenced Tone Generation
- 13.3.2 How To Generate a Custom Cadenced Tone
- 13.3.3 How To Generate a Non-Cadenced Tone
- 13.3.4 TN_GENCAD Data Structure - Cadenced Tone Generation
- 13.3.5 How To Generate a Standard PBX Call Progress Signal
- 13.3.6 Predefined Set of Standard PBX Call Progress Signals
- 13.3.7 Important Considerations for Using Predefined Call Progress Signals
- 13.1 Global Tone Detection (GTD)
- 14. Global Dial Pulse Detection
- 14.1 Key Features
- 14.2 Global DPD Parameters
- 14.3 Enabling Global DPD
- 14.4 Global DPD Programming Considerations
- 14.5 Retrieving Digits from the Digit Buffer
- 14.6 Retrieving Digits as Events
- 14.7 Dial Pulse Detection Digit Type Reporting
- 14.8 Defines for Digit Type Reporting
- 14.9 Global DPD Programming Procedure
- 14.10 Global DPD Example Code
- 15. R2/MF Signaling
- 16. Syntellect License Automated Attendant
- 17. Building Applications
- Glossary
- Index
Voice API Programming Guide — June 2005 121
10
10.Send and Receive FSK Data
This chapter describes the Analog Display Services Interface (ADSI) protocol, two-way frequency
shift keying (FSK), and guidelines for implementing ADSI and two-way FSK support using voice
library functions.
• Overview of ADSI and Two-Way FSK Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
• ADSI Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
• ADSI Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
• One-Way ADSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
• Two-Way ADSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
• Fixed-Line Short Message Service (SMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
• ADSI and Two-Way FSK Voice Library Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
• Developing ADSI Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
• Modifying Older One-Way ADSI Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
10.1 Overview of ADSI and Two-Way FSK Support
The Analog Display Services Interface (ADSI) is a Telcordia Technologies (formerly Bellcore)
standard that defines a protocol used to transmit data to a display-based, ADSI-compliant
telephone. ADSI enables data to be sent across an analog telephone line, providing asynchronous
data communications with 8 data bits, 1 start and 1 stop bit, and no parity.
For many years, one-way ADSI support was provided through the dx_play( ) and dx_playf( )
functions. This ADSI support enabled developers to use Intel telecom boards to make ADSI servers
that work with ADSI phones and to support ADSI features such as visual voice mail. This is
referred to as the “older” implementation of one-way ADSI.
Intel has expanded the capabilities of basic ADSI with the introduction of two-way frequency shift
keying (FSK) capabilities. Two-way FSK is a convenient and robust mechanism to exchange small
amounts of data between the telephone and the server using FSK as the transport layer. The two-
way FSK functionality allows products to transmit and receive half-duplex FSK Bell 202 1200 bps
data over the Public Switched Telephone Network (PSTN).
One of the applications of two-way FSK is fixed-line short message service, also called small
message service, or SMS. (This service is also known as text messaging.) This service allows the
server and display-based telephone to exchange short text messages via the PSTN.
As with basic ADSI, the transmission and reception of two-way FSK data is initiated after a call
between the server and the display-based telephone (or CPE) has been established, by one of the
devices sending a special alerting signal (typically a CAS tone). The other device will then