Telnyx

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Overview

Telnyx is a cloud communications platform that provides programmable voice via its Call Control API. SentiVue Talk’s Telnyx integration uses Call Control plus WebSocket media streaming to power your workflows.

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Prerequisites

Before setting up Telnyx integration, you’ll need:

• A Telnyx account
• An API Key from the Telnyx Mission Control Portal
• A Call Control Application (optional — leave the field blank in SentiVue Talk and we’ll auto-create one for you on save, with the inbound webhook URL pre-set)
• At least one Telnyx phone number assigned to that Call Control Application

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Configuration

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Step 1: Get Telnyx Credentials

1. Log in to the Telnyx Mission Control Portal
2. Navigate to API Keys and create (or copy) an API Key
3. (Optional) Navigate to Call Control → Applications and create (or open) the application you’ll use with SentiVue Talk, then copy its Connection ID (Call Control App ID). Skip this if you want SentiVue Talk to auto-create the Call Control Application for you on save.
4. Navigate to Numbers → My Numbers and assign your phone numbers to the Call Control Application you’ll use with SentiVue Talk (if you’re letting SentiVue Talk auto-create the application, do this after saving the configuration in Step 2)

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Step 2: Configure in SentiVue Talk

1. Navigate to /telephony-configurations and click Add configuration
2. Select Telnyx as your provider
3. Enter your credentials:
   • API Key
   • Call Control App ID (Connection ID) — optional. Leave blank and SentiVue Talk will auto-create a Call Control Application on save (with the inbound webhook URL already configured) and store its Connection ID on this configuration.
4. Click Save Configuration
5. Open the configuration you just created and add at least one phone number (with country code in E.164 format, e.g. +1234567890). The default caller ID is used for outbound calls.
   If SentiVue Talk auto-created the Call Control Application for you, you still need to assign your Telnyx numbers to that application in the Telnyx Portal under Numbers → My Numbers. The auto-created application is named sentivue-<random> — its Connection ID is shown on the saved configuration.

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Step 3: Test Your Configuration

1. Create a test workflow
2. Click “Call” to verify connection
3. Check call logs for successful connection

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Inbound Calling Setup

Telnyx delivers inbound webhooks at the Call Control Application level — the webhook URL is configured once on the application, and applies to every number assigned to it. When you save an inbound workflow on a phone number, SentiVue Talk automatically pushes the webhook URL to your Call Control Application’s webhook_event_url (provided the credentials are correct). If SentiVue Talk auto-created the application during configuration save, the webhook URL is already set and this step is a no-op.

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Step 1: Assign an Inbound Workflow to the Phone Number

1. Go to /telephony-configurations and open your Telnyx configuration
2. In the Phone numbers section, edit the number that should receive inbound calls
3. Set its Inbound workflow to the agent that should answer
4. Save

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Step 2: Verify the Webhook URL on the Call Control Application

1. Go to Call Control → Applications in the Telnyx Portal
2. Open the application whose Connection ID you configured in SentiVue Talk
3. In Webhook Settings, confirm:
   • Webhook URL is set to: https://app.sentivue.com/talk/api/v1/telephony/inbound/run
   • HTTP Method is POST
4. Make sure the phone numbers you want to use for inbound are assigned to this application SentiVue Talk sets this automatically when you save the inbound workflow. Every number on the Call Control Application shares this one URL. Calls still reach the right agent, matched on the number they came in on. If the field is empty or shows something else, the auto-push failed — usually a wrong API Key or Connection ID. Paste the URL in yourself, set the method to POST, and save.

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Step 3: Verify Setup

• Confirm the number is listed in your SentiVue Talk telephony configuration and has an Inbound workflow assigned
• Confirm the number is assigned to the same Call Control Application whose Connection ID is configured in SentiVue Talk

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Test Inbound Calling

1. Call your configured Telnyx phone number from another phone
2. Verify your SentiVue Talk workflow answers and responds
3. Check call logs in both SentiVue Talk dashboard and Telnyx Portal

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Call handling setup

Telnyx numbers use the Standard setup: calls reach your agent through Telnyx’s voice webhook. This supports inbound calls, outbound calls, and cold transfer. Warm transfer and live translation need the Advanced setup, which is currently available on Twilio only. Support for Telnyx is in progress.

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Troubleshooting

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Best Practices

• Test your configuration with a single call before running campaigns
• Monitor the Telnyx Portal for usage and billing
• Use a dedicated Call Control Application for SentiVue Talk so the shared webhook URL doesn’t conflict with other systems