Twilio Voice

Learn to set up a Twilio Voice communication channel for your application in your NLX workspace

The Twilio Voice channel requires a one-time integration in your workspace before a channel can be created.

Step 1: Phone number setup

To allow for full control, a phone number for your voice flow is managed within your Twilio account. Each flow is tied to one phone number, but you can provision multiple phone numbers for a single Twilio workspace.

To assign a number:

  • Go to the Phone Numbers section of your Twilio account

  • Select Manage > Active numbers

  • Go to the details for one of your Active numbers

  • In the Voice & Fax section, manually set the incoming call configuration to Studio Flow and assign the flow that was auto-created for that application

Step 2: Create Twilio Voice channel in NLX

  • Navigate to Channels tab of your application

  • Expand Twilio Voice option

  • Click + Create channel

  • Choose your Twilio workspace integration from the Integration dropdown

Optional:

  • Custom conversation timeout: Allows you to specify the time (in minutes) when a conversation will time out

  • Escalation: Select from an escalation integration set up under your workspace Settings for optional agent transfer. Agent escalation is not managed within NLX. You may customize this in your Twilio Studio account, which can be controlled by the "Send to Flex" widget found in each Twilio Studio Flow that's automatically created during deployment. The NLX application sends the appropriate action to Twilio, and it will respond accordingly.

  • Twilio Fulfillment Lambda endpoint: Allows you to override the Fulfillment Lambda set in the Twilio integration. This is needed to deploy an application that can escalate to Twilio Voice and is pulled from the channel if it is there. Otherwise, it is pulled from the integration. Setting it in either of these is required to deploy a voice application. If neither is set, then the deployment will fail

  • Click Create channel

Due to your one-time integration at the workspace level, whenever your application is deployed in NLX, a default flow is auto-created in your Twilio Studio account. This flow is created for every application you deploy. The deployment creates the initial default flow; however, if you wish to make further customizations, be sure to make changes in both NLX and Twilio Studio flows.

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