What you need#
- A Plivo account with enough credit to rent a number.
- One Plivo number with Voice capability.
- The Auth ID and Auth Token shown in Plivo Console.
- A Plivo Application. Menace Voice can create this for you.
Estimated price#
Plivo lists US local numbers from 1 per month, plus call usage. Other countries and number types can have different monthly and one-time setup fees. Confirm the live amount on Plivo Phone Number Pricing.
Set up Plivo step by step#
1. Buy a voice-capable number#
- Sign in to Plivo Console.
- Open Phone Numbers → Buy Numbers.
- Filter by country, number type, and Voice capability.
- Select a number, review its charges, and click Buy Number.
- Complete any country-specific compliance application Plivo requests.
See Plivo's official Phone Numbers overview.
2. Copy your credentials#
On the Plivo Console dashboard, copy the Auth ID and Auth Token for the account that owns the number. Keep the Auth Token private.
3. Connect Plivo in Menace Voice#
- Open Phone numbers and click Add phone number.
- Choose Plivo and continue.
- Paste the Auth ID and Auth Token.
- Leave Application ID blank unless you already have a dedicated Plivo Application. Menace Voice creates one with the correct answer URL when the field is blank.
- Enter the purchased number with its country code.
- Choose an agent for incoming calls and finish setup.
4. Link the number to the Plivo Application#
In Plivo Console, open Phone Numbers → Your Numbers, select the number, and assign it to the Application used by Menace Voice. If Menace Voice created the Application, use the Application ID shown on the saved provider connection.
5. Test the number#
Call the number from another phone and confirm the selected agent answers. Then place one outbound test call before starting a campaign.
Inbound Calling Setup#
Plivo numbers don't carry an answer_url directly — the URL lives on a Plivo Application, and each number is linked to one application. When you save an inbound workflow on a phone number, Menace Voice automatically pushes the webhook URL to your Plivo Application's answer_url (provided the credentials are correct). You don't need to set the webhook by hand. If Menace Voice auto-created the application during configuration save, the answer_url is already set and this push is a no-op.
Step 1: Link the Phone Number to Your Plivo Application#
- Go to Phone Numbers → Your Numbers in the Plivo Console
- Open the number you want to use for inbound calls
- Set its Application to the same application whose ID you configured in Menace Voice
- Save
Step 2: Assign an Inbound Workflow to the Phone Number in Menace Voice#
- Go to /telephony-configurations and open your Plivo configuration
- In the Phone numbers section, edit the number that should receive inbound calls
- Set its Inbound workflow to the agent that should answer
- Save
Step 3: Verify the Answer URL on the Plivo Application#
-
Open your Plivo Application in the Plivo Console under Voice → Applications
-
Confirm:
- Answer URL is set to:
https://voice.menaceui.com/api/v1/telephony/inbound/run - Answer Method is
POST
NoteMenace Voice pushed this URL automatically when you saved the inbound workflow in Step 2. The same URL is shared across every number linked to that application — Menace Voice routes each inbound call to the right agent based on the called number's inbound workflow assignment. If the field is empty, shows a different URL, or Menace Voice surfaced a sync warning on save, the auto-push failed — most often because the Auth ID/Token or Application ID in Menace Voice is incorrect. Paste the URL into the field yourself, set the method to
POST, and save the application. On self-hosted Menace Voice, replacevoice.menaceui.comwith your backend domain. - Answer URL is set to:
Step 4: Verify Setup#
- Ensure your Menace Voice instance is publicly accessible
- Verify any firewalls allow Plivo's IP ranges
Test Inbound Calling#
- Call your configured Plivo phone number from another phone
- Verify your Menace Voice agent answers and responds
- Check call logs in both Menace Voice dashboard and Plivo Console
Troubleshooting#
Invalid phone number error
Ensure phone numbers include country code in E.164 format: +1234567890
Authentication failed
- Verify Auth ID and Auth Token are correct - Check for extra spaces in credentials - Ensure credentials haven't been regenerated in Plivo Console
Webhook signature validation failing
- Confirm your Auth Token matches exactly - Verify the webhook URL matches what Plivo sends - Check if you're behind a proxy that modifies requests
No audio on calls
- Verify WebSocket connection is established - Check firewall rules for WebSocket traffic - Ensure audio pipeline is configured correctly
Inbound calls go to voicemail or aren't answered
- Verify the phone number is linked to the same Plivo Application whose ID you configured in Menace Voice - Confirm the called number exists in your Menace Voice telephony configuration and has an Inbound workflow assigned
- After assigning the inbound workflow, confirm Menace Voice successfully
updated the application's
answer_url(no warning shown on save) - Verify Menace Voice instance is running and responding
Voice agent doesn't respond to inbound calls
- Confirm the phone number has an Inbound workflow assigned in /telephony-configurations - Check webhook signature validation is working (Auth Token in Menace Voice matches Plivo Console) - Verify WebSocket connection establishes successfully - Review call logs for error messages
Best Practices#
- Test your configuration with a single call before running campaigns
- Monitor Plivo Console for usage and billing
- Use a dedicated Plivo Application for Menace Voice so the shared
answer_urldoesn't conflict with other systems