voicer

AGI voice recognizer for Asterisk [use Yandex, Google or Wit.ai ASR online services]

Call to special extension, say "Vasya" and Asterisk connect you with Vasya! Excellent!

Workflow

Voicer work as AGI-server. Voicer accept request from asterisk via AGI app. It run handler for each request. Handler command asterisk record file.

After this send file to recognition service, receive text, search by text in source of data for finding concordance, if source have this text it return channel for call, voicer set dialplan vars RECOGNITION_RESULT as SUCCESS and RECOGNITION_TARGET for finded result.

After this voicer return control to dialplan. Build rules of dialplan using RECOGNITION_RESULT and RECOGNITION_TARGET.

Use

Install

$ npm install voicer -g [--save]

Run

use npm config for store config opts

voicer

Configuration

Config.js

{
    agi: {
        port: 3000
    },
    web: {
        port: 3100,
        auth: true,    // or false 
        username: 'vasya',
        password: 'password',
        realm: 'My company'
    },
    processing: {
        totalAttempts: 2,
        playGreeting: true,
        playBeepBeforeRecording: false   //use system beep
    },
    asterisk: {
        sounds: {
            onErrorBeforeFinish: 'invalid',
            onErrorBeforeRepeat: 'invalid',
            greeting: 'beep'
        },
        recognitionDialplanVars: {
            status: 'RECOGNITION_RESULT',
            target: 'RECOGNITION_TARGET'
        }
    },
    record: {
        directory: '/tmp',
        type: 'wav',
        duration: 2,
    },
    recognize: {
        directory: '/tmp',
        type: 'witai',    // ['yandex', 'google', 'witai']
        options: {
            developer_key: '6SQV3DEGQWIXW3R2EDFUMPQCVGOEIBCR'
        }
    },
    lookup: {
        type: 'file',
        options: {
            dataFile: 'data/peernames.json'
        }
    }
};

Asterisk

Write dialplan for call to AGI-server voicer like

[default]
exten=1000,1,AGI(agi://localhost:3000)
exten=1000,n,GotoIf($[${RECOGNITION_RESULT}=SUCCESS]?:default,1000,4)
exten=1000,n,Dial(${RECOGNITION_TARGET})

Format peernames

[
    ....

    {
        "name": "Vasya",
        "target": "SIP/Sf567890",
        "variants": ["vasya", "vasya petrov"]
    },
    
    ....

]

Some more

Also you can tune additional options in config.js.

Try find optimal value for duration of record.

Errors?!

Bugs?! Oh, contact with me. I want to eat them.

Links

Yandex API key: https://developer.tech.yandex.ru/

Google API key: https://console.developers.google.com/

Wit.ai API key: http://wit.ai

Voice speed dial on Asterisk http://habrahabr.ru/post/248263/ (russian)

Development

Test

npm test