Fallback

Fallback Setting

Telnyx and Twilio both have a field in their settings to configure a backup or failover URL to send the SMS or Call to in case the primary link fails.

You can host your instance of VoIP Suite on 2 different locations. Below are some options for redundacy:

One in Heroku, one in another PaaS service
2 Separate Heroku accounts or 1 account with 2 dynos
VPS
Home server
AWS, GCP, Azure

Go to Settings > Account Settings > Fallback Settings

The primary link is pre-populated with the current URL when you enter and save the API key. To change it to something else, you simply need to click save on the API settings again.
Enter in the URL of the 2nd domain name and the app will automatically push that to Twilio and Telnyx settings
Click Update

1. Making another Heroku account for fallback.

Navigate to https://www.heroku.com/
Click "Billing"
Click "Add credit card" (no charge made, just provides additional credits)
Click "Create New App"
Provide any "App name", which must be unique
Note: You might want to choose Europe in case US servers go down..

2. Configuring Heroku with the 2nd base URL

Return to the Heroku browser tab
If you do not see your app, click the logo in the upper-left and select your app
Click the "Settings" tab
Click "Reveal Config Vars"
Copy content from old to new account
Change the base url to the 2nd instance instead (https://2ndApp.herokuapp.com/)

3. VoIP Suite Web App