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Zend Framework: Zend_Asterisk Component Proposal

Table of Contents

1. Overview

Zend_Asterisk is a component that contain two main components: Zend_Asterisk_Manager and Zend_Asterisk_Agi
Zend_Asterisk_Manager will connect with the Asterisk Manager interfaces and can send and load data with the local Asterisk server.
Zend_Asterisk_Agi implements a Asterisk Gateway Interface which can be used to control and interact with a call in progress.

2. References

• Download current release
• Asterisk (Digium)
• voip-info.org

3. Component Requirements, Constraints, and Acceptance Criteria

• This component will connect with the Asterisk Manager and can write and read to Asterisk socket.
• This component will answer to Asterisk call and hangup an active call.
• This component will detect DTMF digits (single or collect digits) and play specific audio files.
• This component will read and write Asterisk global variables (like extensions) and call variables (like callerid).

4. Dependencies on Other Framework Components

• Zend_Exception

5. Theory of Operation

The component can be used in two way:

• As Asterisk Manager, who can send command directly to the server and read it's output
• As Asterisk Gateway Interfaces, who can answer to a call, process user input, interact with others services (like a database) and return results or informations to user.

6. Milestones / Tasks

• Milestone 1: design notes will be published here
• Milestone 2: Asterisk Gateway Interface: write to socket and read from socket.
• Milestone 3: Asterisk Gateway Interface: parse callerid, collect digits, play audio files.
• Milestone 4: Asterisk Manager: connect to Asterisk Server, send commands and read outputs.

7. Class Index

• Zend_Asterisk_Exception
• Zend_Asterisk (factory class)
• Zend_Asterisk_Manager
• Zend_Asterisk_Agi

8. Use Cases

9. Class Skeletons