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Overview

AwaazAI provides a managed telephony platform that connects your Vapi AI voice agents to real phone calls. We handle all the telephony infrastructure, audio processing, and connectivity - you just need to provide your Vapi credentials. Key Benefits:
  • No telephony infrastructure to manage
  • Use Indian phone numbers for compliance and local reach
  • Real-time, low-latency audio streaming to Vapi
  • Automatic audio format conversion and optimization
  • Production-ready reliability and error handling

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Requirements

To use this service, you need:

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1. Vapi Account

  • An active account at vapi.ai
  • One or more configured Vapi assistants
  • Your Vapi API key (found in your Vapi dashboard)

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2. AwaazAI Account

  • Contact our sales team to set up your account
  • We’ll provision Indian phone numbers for your use
  • With the help of AwaazAI team, create assistant specific template. The template needs to be configured with assistant parameters.

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3. Information to Provide

  • For each assistant, you’ll need to provide us:
ParameterDescriptionRequiredExample
Vapi Assistant IDThe unique ID of your Vapi assistantYes7420f27a-30fd-4f49-a995-5549ae7cc00d
Vapi API KeyYour Vapi API authentication keyYessk_live_xxxxx...
Custom Metadata (optional)Additional data to pass to your assistantNo{"customer_name": "Ravi", "priority": "high"}

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How It Works

Here’s what happens when we make a call on your behalf: 
┌─────────────┐        ┌──────────────┐        ┌─────────────┐
│   End User  │ ◄────► │   AwaazAI    │ ◄────► │  Vapi AI    │
│   (Phone)   │ Voice  │  Telephony   │   API  │  Assistant  │
└─────────────┘        └──────────────┘        └─────────────┘

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Step-by-Step Flow

Template Setup
  • You share your Vapi Assistant ID and API key with AwaazAI team
  • We will configure template with assistant parameters
Call Initiation
  • Upload contact numbers and create messages using configured template
  • AwaazAI scheduler places the call using your assigned Indian phone number
  • When the recipient answers, we immediately establish a connection to Vapi
  • Your Vapi assistant receives the call via Vapi’s standard API
Conversation
  • Audio flows in real-time between the caller and your Vapi assistant
  • All audio processing, transcription, and AI responses are handled by Vapi
  • We maintain low-latency audio transmission
Call Completion
  • When the call ends (by either party), we gracefully disconnect
  • Your assistant receives a standard Vapi call completion event

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Configuration Guide

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Finding Your Vapi Credentials

Vapi Assistant ID:
  1. Log in to vapi.ai
  2. Navigate to “Assistants” in the dashboard
  3. Click on the assistant you want to use
  4. Copy the Assistant ID from the URL or settings page
    • Format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Vapi API Key:
  1. In your Vapi dashboard, go to “Settings” → “API Keys”
  2. Create a new API key or copy an existing one
  3. Store it securely - you’ll need to provide this to AwaazAI
    • Format: sk_live_... or sk_test_...

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Audio Technical Specifications

For reference, here are the audio specifications we use (handled automatically - no action needed):
  • Format: μ-law (PCMU) / 16-bit PCM
  • Sample Rate: 8 kHz (standard telephony quality)
  • Encoding: Base64 when transmitted via WebSocket
  • Latency: Optimized for low round-trip latency
  • Channels: Mono (single channel)
We handle all audio conversion automatically - your Vapi assistant receives audio in the standard format expected by Vapi’s API.

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Support & Resources

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AwaazAI Support

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Vapi Resources

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Frequently Asked Questions

Q: Do I need to modify my Vapi assistant for AwaazAI?
A: No, your existing Vapi assistants work without modification. We connect to Vapi’s standard API. Q: Can I use the same assistant for multiple templates?
A: Yes, you can reuse the same Vapi Assistant ID across multiple AwaazAI campaigns. Q: What happens if my Vapi API key expires?
A: Calls will fail to connect. Provide your updated API key immediately to resume service.

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Getting Started Checklist

  • Create your Vapi assistant at vapi.ai
  • Test your assistant in Vapi’s playground
  • Get your Vapi Assistant ID
  • Get your Vapi API key
  • Sign up for AwaazAI account
  • Configure template
  • Upload sample messages
  • Run test calls with sample contacts
  • Launch your production campaign