Configuration Reference

This page contains the details of the Connection Configuration and the Symbl Configuration required while using the Web SDK.

Connection Configuration

The following code shows an example connection configuration for Web SDK. The connection configuration is passed into the Streaming API connection during the startProcessing method.

const connectionConfig = {
  id: "bd82dd08-ad93-4549-827c-3f646647ae61",
  disconnectOnStopRequest: false,
  disconnectOnStopRequestTimeout: 1800,
  noConnectionTimeout: 900,
  insightTypes: ["follow_up", "action_item", "question"],
  config: {
      meetingTitle: "Mic Test", // Name for meeting
      confidenceThreshold: 0.7, //Minimum confidence score set for the API to consider an insight as valid.
      timezoneOffset: 480, // Offset in minutes from UTC
      languageCode: "en-US",
      encoding: "OPUS",// Also supports LINEAR16
      sampleRateHertz: 48000 // Rate of the incoming audio stream. Make sure the correct sample rate is provided for best results
  },
  trackers: [{
      name: "Promotion Mention", // Name of the Tracker
      vocabulary: ["We have a special promotion going on", "We have a sale right now on", "offer"] // Words or phrases that should be tracked
  }],
  speaker: {
      userId: "[email protected]", // Unique identifier of the speaker
      name: "john"
  }
}

You can pass any of the following connection configuration parameters:

FieldRequiredSupported ValueDescription
idOptional*Should match this regex: /^[a-zA-Z0-9-]{6,64}$/The ID for the current session. *If not provided, a UUID will be generated for you.
insightTypesOptionalaction_item, questionTypes of insights to return. If not provided, no insights will be returned.
customVocabularyOptionalList of StringAn array of strings containing vocabulary specific to your company, products, or phrases.
configOptionalFind the supported value hereConfiguration for this request. See the config section below for more details.
speakerOptionalFind the supported value hereSpeaker identity to use for audio in this WebSocket connection. If omitted, no speaker identification will be used for processing. See the speaker section below for more details.
trackersOptionalList of TrackersAn array of trackers. See the trackers section below for more details.
noConnectionTimeoutOptionalBetween 0 to 1800 secondsThe buffer time (in seconds) during which the WebSocket API connection stays open even if there’s no Streaming API connection active for that duration. This allows the Speaker to reconnect to the same meeting with the same Subscribers if they lost the connection previously.

For example, when this parameter is set to noConnectionTimeout = 600 secs and if there is no graceful termination using stop_request message sent explicitly when there just one WebSocket connection, the connectionId and conversationId are kept valid for 600 seconds before finalizing the connection, after which connectionId will be not available to subscribe and conversationId will have all the last know information associated with it.
disconnectOnStopRequestOptionaltrue or falseThis parameter allows you to set your Streaming API connection in such a way that even when the stop_request is sent. The connection does not drop-off, only the processing is stopped and the conversationId and connection is kept live for 1800 seconds by default. You can always override this value by passing the disconnectOnStopRequest parameter.

This allows you to stop and start the Streaming API processing without dropping the WebSocket connection, so that you can stop and resume the processing in the middle of a call and optimize the Streaming API usage costs.

The default value is true.
disconnectOnStopRequestTimeoutOptionalBetween 0 to 1800 secondsThis parameter allows you to override the idle time out (if a WebSocket connection is idle for 30 minutes). Set this parameter with a value between 0 to 1800 seconds. If the idle connection needs to be kept alive beyond 1800 seconds, you have to restart the connection at 1800 seconds elapsed.

If the value is passed as 0, the WebSocket connection is dropped when stop_request is received. The default value is 1800.
reconnectOnErrorOptionaltrue or falseWhen set to true, an attempt is made to reconnect after a break in connection. A break in connection is determined after 30 seconds of not receiving any expected data from the WebSocket. The default value is false.
Code Example
{
  "type": "start_request",
  "insightTypes": ["question", "action_item"],
  "customVocabulary": ["acme", "acme-platform"],
  "config": {},  // See Config section below.
  "speaker": {}  // See Speaker section below.
  "trackers": [] // See Trackers section below.
}

Config

FieldRequiredSupported valueDefault ValueDescription
confidenceThresholdfalse<=0.5 to <=1.00.5Minimum confidence score that you can set for an API to consider it as valid insight. The minimum confidence score should be in the range >=0.5 to <=1 (greater than or equal to 0.5 and less than or equal to 1.0.). Default value is 0.5.
encodingfalseLINEAR16, OpusLINEAR16Audio Encoding in which the audio will be sent over the WebSocket.
sampleRateHertz false16000The rate of the incoming audio stream.
meetingTitlefalseThe name of the meeting.
Code Example
{
  "config": {
    "confidenceThreshold": 0.9,
    // "timezoneOffset": 480, // Your timezone offset from UTC in minutes
    "meetingTitle": "Client Meeting",
    "encoding": "LINEAR16",
    "sampleRateHertz": 16000 // Make sure the correct sample rate is provided for best results
  }
}

Speaker

FieldRequiredSupported Value
userIdOptionalAny user identifier for the user.
nameOptionalDisplay name of the user.
Code Example
{
  "speaker": {
    "userId": "[email protected]",
    "name": "Jane"
  }
}

Trackers

FieldRequiredSupported Value
nameOptionalThe name acts as a unique identifier assigned to the Tracker. It is case-sensitive, which means that a Tracker can be created with the same name but with different cases.
vocabularyOptionalThe vocabulary contains a set of phrases/keywords which signify the context of the Tracker. In other words, these are a set of sentences that are commonly used while talking about the said Tracker in different contexts.
Code Example
{
    trackers: [
        {
            name: "Goodness",
            vocabulary: [
                "This is awesome",
                "I like it",
                "I love this"
            ]
        }
    ]
}

Full Code Example

const connectionConfig = {  
  "disconnectOnStopRequest": false,
  "disconnectOnStopRequestTimeout": 1800,
  "noConnectionTimeout": 1800,
  "insightTypes": ["question", "action_item"],
  "config": {
    "confidenceThreshold": 0.9,
    "timezoneOffset": 480, // Your timezone offset from UTC in minutes
    "encoding": "LINEAR16",
    "sampleRateHertz": 44100, // Make sure the correct sample rate is provided for best results
    "meetingTitle": "Client Meeting"
  },
  "trackers": [
    {
        "name": "Goodness",
        "vocabulary": [
            "This is awesome",
            "I like it",
            "I love this"
        ]
    }
  ],
  "speaker": {
    "userId": "[email protected]",
    "name": "Jane"
  }
};

Symbl Configuration

FieldRequiredDescription
accessTokenOptionalThe access token generated using Symbl’s Authentication method. Recommended method for production environments. *Cannot be paired with appId or appSecret.
appIdOptionalThe App ID from the Symbl Platform. We only recommend using this on non-production environments. *Must be paired with appSecret.
appSecretOptionalThe App Secret from the Symbl Platform. We only recommend using this on non-production environments. *Must be paired with appId.
reconnectOnErrorOptionalfalse by default. If true, will attempt to reconnect to the WebSocket if disconnected by error.
basePathOptionalThe base path of the Symbl API. By default it is https://api.symbl.ai.
logLevelOptionalThe log level you wish to view in the console. Supported values are error,warn,debug,info,log,trace.

Code Example

const symbl = new Symbl({
  accessToken: " < YOUR ACCESS TOKEN >",
  reconnectOnError: true,
  logLevel: "debug"
});

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