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phone-rotaryVapi

Connect your Vapi AI assistants to KrosAI phone numbers for emerging market coverage.

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Overview

Vapi is an AI voice assistant platform. With KrosAI, you can route calls from your African and Middle Eastern phone numbers to Vapi assistants.

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Prerequisites

  • KrosAI account with verified KYC

  • At least one KrosAI phone number

  • Vapi account with an assistant created

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Setup Steps

1

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Configure SIP Trunk in Vapi

  • On your Vapi Dashobard navigate to Intergrationsarrow-up-right

  • Search for SIP Trunk and click on it.

  • Click on Configure New SIP Trunk

  • On KrosAI dashoard, open and copy the SIP credentials of your phone number.

  • Fill the New Sip Trunk Form in Vapi with your KrosAI phone number SIP credential

  • Note: Use the SIP crediential SIP IP Address instead of the SIP Domain

  • Save SIP Trunk.

2

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BYO KrosAI Phone Number to Vapi

  • Open Phone number on Vapi Dashboard

  • Click Create Phone Number

  • Select BYO SIP Trunk Number

  • Enter your KrosAI number with country code in the phone number field

  • On the SIP Trunk Credential dropdown select the SIP Trunk you just created.

  • Click of Import SIP Phone Number

3

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Get Your Vapi Assistant ID

  • On your Vapi Dashboard navigate to Assistants

  • Select your assistant

  • Copy the Assistant ID

4

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Connect Vapi in KrosAI

  • Go to Settings → Integrations in your KrosAI Dashboard

  • Click Connect next to Vapi

  • Enter your Vapi API Key

  • Click Save & Test

5

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Create Endpoint and Attach Phone Number

  • On your KrosAI dashboard click of Endpoints

  • Click on Add Endpoint

  • Enter a Name

  • Select Vapi as your AI agent Provider

  • Enter Vapi Assistant ID

  • Enter your Vapi SIP Trunk Credential ID

  • Select the phone number to attach

  • Finally click create Endpoint

6

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Make your first calls

🎉 Congratulations! You’ve successfully connected your local phone number to your AI agent. Call the number to start a conversation with your agent.

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Troubleshooting

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  • Verify your Vapi API key is correct

  • Check the assistant ID exists

  • Ensure the assistant is active in Vapi

  • Review KrosAI Dashboard → Calls for error details

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  • Check your Vapi assistant's voice settings

  • Verify SIP connectivity in Vapi dashboard

  • Review call events for media errors

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  • Test the assistant directly in Vapi

  • Check for LLM errors in Vapi logs

  • Verify function calling permissions

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