Call Ingestion API

The Call Ingestion API is used to submit call details along with a recording URL for calls that were not live-connected and routed through the Invoca Telephony platform.

Calls submitted through this API are available to all Invoca systems. This includes the Invoca transcription engine, Signal AI, as well as the Dashboard and Reporting system.

Invoca post-call processing services are applied to calls based on network and campaign settings. The campaign for the call is determined by the advertiser_campaign_id_from_network parameter in the API.

Additionally, Signals and Custom Data related to the call can be submitted during the initial call ingestion step. Please note that Signals and Custom Data can also be applied in the future using the Signal API.

Requests may take up to 24 hours to process into the Invoca system.

Requirements

In order to use the Call Ingestion API:

The Call Ingestion feature must be enabled for your network. Your Invoca Customer Success Manager (CSM) can enable this for you.

A specific “External” campaign must be created on your network. This campaign ID is what you’ll use in the API request.

Call recordings must be dual-channel/stereo recordings. They must also be in a file format that we support. Invoca cannot process single-channel/mono recordings or unsupported file types. See the Supported Recording Formats section for more details.

Call recordings must be accessible by Invoca. See Supported Recording Access Options for more details.

Endpoint

https://invoca.net/api/2022-03-01/calls.json

Request Parameters

Passed in “application/json” format.

Call Parameters

These are the call details used when creating the call in the Invoca platform.

Required

external_call_unique_id The unique ID of the call from the external system. This field is required to be unique across all calls within a network that are submitted from external sources.

start_time This is the date and time when the call started on the call origination platform. Please see the Timestamp Formats section below for descriptions of supported timestamps.

destination_phone_number DNIS in E.164 format +country national_number; example: ‘+18885551212’. UK and Spanish numbers are also supported. Their country codes are +44 and +34 respectively.

calling_phone_number ANI in E.164 format +country national_number; example: ‘+18885551212’.

advertiser_campaign_id_from_network The ID from network field on the advertiser campaign. The submitted call will be added to this campaign. Please note that this campaign must be of type ExternalOnly See Advertiser Campaigns for more details.

call_direction The direction of the call flow. Accepted values: inbound or outbound.

recording_url OR recording_filename. Either the URL to the call recording, or if you are using the Direct Access to S3/Azure/SFTP feature, the filepath to the recording. Please see the Supported Recording Formats and Supported Recording Access Options sections for more details.

Optional

language_code The IETF language tag for the call transcription. This parameter can be processed only if multiple language processing is enabled for the network or it matches the default language code of the network. The default is given from the network attribute (“default_language_code”) if it is set, otherwise “en-US”. The following language codes are supported:

Language Code

Description

en-US

English (United States)

en-GB

English (United Kingdom)

es-ES

Spanish (Spain)

fr-FR

French (France)

recording_auth_config_id The ID from the Auth Configuration setup step. Please see the Supported Recording Access Options section for more details.

Signal Parameters

Used to create the fields of a signal. The Signal name provided in a request must already exist in your Signal AI configuration.

Required

name The name describing the signal event. For reporting a sale happened on a call, “Sale” is recommended. Other examples include “Free Trial”, “2yr Subscription”, “Cancellation.” This can be used elsewhere in the system and should be a small list of values meaningful to your organization. Names are matched case-insensitively.

Optional

value True or false as to whether the signal was met or not. Defaults to true if not passed. Can be a string ‘true’ or ‘false’, or 1 (true) or 0 (false), Yes (true), or No (false). These values are not case sensitive.

Custom Data Parameters

Apply Custom Data values to a call based on your Custom Data configuration. Custom Data can be any alpha-numeric value (e.g. account type, customer quality score, etc).

The Custom Data Fields provided in a request must already exist in your Custom Data Configuration

Required

name The Partner (API) Name of the Custom Data Field you want to apply a value to. Visit your Custom Data Management Page to view your available Custom Data Fields.

value The value you would like to apply to the associated Custom Data Field for this call.

Additional Parameters

Required

oauth_token API token for authentication. Can be specified in the header or body of the request (See Manage API Credentials)

Examples

All of these examples use POST requests, but we will also accept PUT requests with the same request format.

Examples

Endpoint:

https://invoca.net/api/2022-03-01/calls.json

Request Body:

{
  "call": {
    "external_call_unique_id": "100002",
    "start_time": "2016-02-03 09:30:00 AM",
    "destination_phone_number": 2165388265,
    "calling_phone_number": 8779257383,
    "advertiser_campaign_id_from_network": 85,
    "call_direction": "inbound",
    "recording_url": "<CALL RECORDING URL>"
  },
  "oauth_token": "<YOUR OAUTH TOKEN>"
}

Response Code: 201

Response Body:

{
  "cuid": "<NEW_CUID>"
}

Examples

Example of creating a call with Signals and Custom Data:

Endpoint:

https://invoca.net/api/2022-03-01/calls.json

Request Body:

{
  "call": {
    "external_call_unique_id": "123ABC",
    "start_time": "2016-08-08 11:03:31 -0700",
    "destination_phone_number": 9093900003,
    "calling_phone_number": 8779257383,
    "advertiser_campaign_id_from_network": 85,
    "call_direction": "inbound",
    "recording_url": "<CALL RECORDING URL>"
  },
  "signals": [
    {
      "name": "sale",
      "value": 1
    },
    {
      "name": "quote",
      "value": 1
    }
  ],
  "custom_data": [
    {
      "name": "channel",
      "value": "Paid Search"
    },
    {
      "name": "line_of_business",
      "value": "Social"
    }
  ],
  "oauth_token": "<YOUR OAUTH TOKEN>"
}

Response Code: 201

Response Body:

{
  "cuid": "<NEW_CUID>"
}

Response Codes

Remember to check the HTTP status code returned. This helps greatly when debugging.

Status Code

Meaning

201 Created

A new call creation request was successfully created.

202 Accepted

The call creation request has already been received.

400 Bad Request

Attempted to make a request with an invalid API Version for route. Check the error message for any neccessary corrections

401 Not Authorized

Invalid or missing oauth token.

403 Forbidden

Attempted to access an invalid resource or provided invalid data. Check the errors object in the response.

409 Conflict

The external_call_unique_id in the request has already been used. Please contact the Invoca support team at questions@invoca.com for further assistance.

Timestamp Formats

The following formats are supported for the start_time parameter.

All examples below correspond to a date time of 11 April 2016 at 1 PM Pacific Time.

Epoch: 10 digit timestamp in UTC seconds since 1/1/70, also known as Unix time_t. UTC milliseconds since 1/1/70 (which is the default in Javascript) are also supported, i.e. a 13 digit start time.

Example (10 digits): 1460404800

Example (13 digits): 1460404800000

Compressed: 17 digit timestamp always parsed in UTC.

Format: YYYYMMDDHHMMSSsss

Example: 20160411130000000

ISO 8601: Timestamp with +/- UTC offset or Z to indicate time is in UTC. Milliseconds are optional.

Format: YYYY/MM/DDTHH:MM:SS.sss+hh:mm

Example (UTC offset of +3 hours): 2016/04/11T23:00:00.000+03:00

Example (UTC offset of -7 hours): 2016/04/11T13:00:00.000-07:00

Example (UTC): 2016/04/11T20:00:00.000Z

Example (no milliseconds): 2016/04/11T13:00:00-07:00

Excel Compatible: Timestamp parsed in the timezone of the oauth token’s associated network. Milliseconds are optional.

Format: YYYY/MM/DD HH:MM:SS.sss AM/PM

Example: 2016/04/11 13:00:00.000 PM

Example (no milliseconds): 2016/04/11 13:00:00 PM

Example POST Request Using cURL

You can send call results to Invoca servers in the form of an HTTP POST or PUT. cURL is recommended because it is simple and preinstalled on most machines. Below is an example of a cURL request:

curl --location --request POST 'https://invoca.net/api/2022-03-01/calls.json' \
--header 'Content-Type: application/json' \
--header 'Authorization: <token>' \
--data-raw '
{
  "call": {
    "external_call_unique_id": "10002",
    "start_time": "2022-03-25 09:31:29",
    "destination_phone_number": 9093900003,
    "calling_phone_number": 8779257384,
    "advertiser_campaign_id_from_network": 86,
    "call_direction": "inbound",
    "recording_url": "<CALL RECORDING URL>"
  }
}'

Below is the same example as above with the OAuth Token passed in via the request headers:

curl --location --request POST 'https://invoca.net/api/2022-03-01/calls.json' \
--header 'Content-Type: application/json' \
--header 'Authorization: <token>' \
--data-raw '
{
  "call": {
    "external_call_unique_id": "10001",
    "start_time": "2022-03-25 09:31:29",
    "destination_phone_number": 9093900003,
    "calling_phone_number": 8779257384,
    "advertiser_campaign_id_from_network": 86,
    "call_direction": "inbound",
    "recording_url": "<CALL RECORDING URL>"
  }
}'

Errors

The Call Ingestion API clearly identifies errors when a request cannot be processed.

Invalid Inputs

If invalid parameters are passed, an error will be returned with a 403 response code.

For example, if a call or parameters within the call are not passed in the request, the following error will be returned. If there are multiple issues with the request, we will do our best to package all of the issues together in one response message.

Response (403 Forbidden):

{
  "errors": {
    "class": "RecordInvalid",
    "invalid_data": "Validation failed: 'call' is required"
  }
}

Permission Errors

If you do not have access to the Call Ingestion API, the following error will be returned with a 403 response code. Please note that the Call Ingestion API is enabled per network. Please contact the Invoca support team at questions@invoca.com for setup assistance.

Response (403 Forbidden):

{
  "errors": {
    "class": "UnauthorizedOperation",
    "invalid_data": "You do not have permissions to perform the requested operation."
  }
}

Authorization Errors

If you do not have access to the advertiser_campaign_id_from_network an error will be returned with a 403 response code. For example, if you pass an advertiser_campaign_id_from_network that you do not have access to, the following error will be returned.

Response (403 Forbidden):

{
  "errors": {
    "class": "UnauthorizedAdvertiser",
    "invalid_data": "You do not have access to this advertiser"
  }
}

Campaign Configuration Related Errors

In order to fully utilize the Call Ingestion API, there are some configuration requirements for the campaign that the call is being submitted under. Here’s a list of those requirements:

  • Campaigns must be setup with a campaign type of ExternalOnly.

  • Campaigns need to be have either the Signal AI product feature or at least one Voice Signal enabled. This will enable transcription service on the submitted call.

If any of these settings are misconfigured you’ll see error message similar to the examples below. Please contact the Invoca support team at questions@invoca.com for setup assistance.

Response (403 Forbidden):

{
  "errors": {
    "class": "call.advertiser_campaign_id_from_network",
    "invalid_data": "campaign must be for external calls only"
  }
}

Response (403 Forbidden):

{
  "errors": {
    "class": "call.advertiser_campaign_id_from_network",
    "invalid_data": "campaign must have transcription enabled"
  }
}

Supported Recording Formats

The Call Ingestion API supports the following file formats:

  • WAV

  • MP3

  • MP4

    • Note: MP4s should be audio-only

Please note that after ingestion, the Invoca Audio Processing system will upsample or downsample accordingly into our default call recording format, which is: MP3 with an 8 kHz sample rate.

All call recordings are required to be in dual-channel or stereo format. The call recording of an inbound call on the Invoca platform has the caller channel on channel 0 and the agent audio on channel 1. For all calls submitted via the Call Ingestion API, we will normalize the channels to match the Invoca call record channel layout.

The call_direction field will determine how the recording is normalized:

inbound The audio processing system will assume that the call recording matches the Invoca default with the caller channel on channel 0 and the agent channel on channel 1.

outbound The audio processing system will assume that the call recording is the opposite of the Invoca dafault. The audio procesing system will normalize the call recording by swapping the channels.

If the Invoca Audio Processing system finds any call recording format problems then a message will be sent via email notifying your Invoca Customer Success Manager (CSM) who will then reach out to help resolve any issues. Please see the Call Processing Error Notifications section for more details.

Supported Recording Access Options

Call Recordings must be accessible to the Invoca system. There are a couple of ways to configure your recordings to support this requirement:

Public URL In this approach, you can provide a recording_url for the call recording that is able to be downloaded without requirement of access credentials or API keys. Requesting this URL should directly download the recording.

Presigned URL If the call recording is hosted in AWS S3 you can use presigned URLs. In this approach, you can provide a recording_url with a presigned URL that grants access for a predefined period of time. The presigned URL must be live for more than 24 hours to give Invoca enough time to process the recording.

Direct Recording Access to S3/Azure/SFTP In this approach, you can provide Invoca with credentials to access recordings in Amazon S3, Microsoft Azure Blob Storage, or via SFTP. Then, you can provide a recording_filename with a path to the recording. If your recording filename exactly matches the external_call_unique_id, you can omit this field entirely. Your Invoca Customer Success Manager (CSM) can assist with setting this up.

Secure Recording URL If accessing your call recordings requires an API token, you can set an Auth Configuration with Invoca support. After setup, Invoca will provide you with the corresponding Auth Configuration ID. When passed as a parameter in your API request, the recording_auth_config_id will enable the Invoca Audio Processing system to access the recording. Currently, the following authentication methods are supported:

Authentication Method

Description

HTTP Authentication Header

Sends a header with the format Authorization: Bearer <Token>

Query String Parameter

Appends a new query string param to the recording_url parameter with the format ?<Query String>=<Token>.

Custom Header

Sends a header with the format <Custom Header>: <Token>

After a new call is successfully submitted via the API, a message is sent to notify the Invoca Audio Processing system to download the recording and begin processing. The audio processing system attempts to download the recording via a standard network request using wget or curl.

If the Invoca Audio Processing system is unable to succesfully download and process the call recording then a message will be sent via email notifying your Invoca Customer Success Manager (CSM) who will then reach out to help resolve any issues. Please see the Call Processing Error Notifications section for more details.

Call Processing Error Notifications

Details on this process coming soon

Retrying Failed Calls

Details on this process coming soon