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VOICE-TO-VOICE AI

Voice-to-Voice AI Assistant

Human-like phone AI for calls, bookings, and follow-ups — 24/7

Real-time voice AI that handles inbound/outbound calls — bookings, FAQs, follow-ups, and lead qualification — with <500ms latency and optional voice cloning.

< 500ms
Voice response latency
24/7
Zero downtime, unlimited calls
80%
Cost saving vs call centre
30+
Languages supported
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Overview

Everything You Need — Ready to Launch

Your phone lines are your most human-feeling customer touchpoint — and the hardest to scale. Our Voice-to-Voice AI Assistant sounds indistinguishable from a real agent, handles entire conversations from greeting to resolution, and executes real-world actions like booking appointments, looking up account status, and scheduling callbacks. Deployed over standard phone lines via SIP/Twilio, it handles hundreds of simultaneous calls without a queue — at a fraction of call centre costs. Available 24/7, speaks 30+ languages, and never has a bad day.

Launch Timeline
10–18 days from kickoff
Customisation
Full white-label
Post-launch Support
30-day post-launch monitoring
Hosting
Hosted on our managed cloud infrastructure
Voice-to-Voice AI Assistant
Deployment Details
Timeline: 10–18 days from kickoff to live call handling
Customisation: Custom voice, persona, conversation scripts, and workflow integrations. Fully white-labelled
Support: 30-day post-launch monitoring. Monthly call quality reviews and script optimisation
Hosting: Hosted on our managed cloud infrastructure. SLA includes 99.9% uptime for call handling
Features

What's Inside the Platform

Every feature is production-ready, configurable, and included in the base deployment — not sold as separate add-ons.

Ultra-Low Latency (<500ms)

Proprietary speech pipeline — speech-to-text, LLM reasoning, and text-to-speech — optimised to complete within 500ms. Conversations feel natural with no awkward pauses or robotic delays.

Custom Voice Cloning

Clone your brand ambassador's voice or choose from 50+ premium pre-built voices across genders, accents, and ages. Voice is consistent across every call — your brand's audio identity.

Booking & Workflow Execution

Connects to your calendar (Google Calendar, Calendly, clinic management systems) and CRM to book appointments, check availability, update records, and trigger follow-up sequences — all mid-call.

Emotion & Tone Detection

Real-time sentiment analysis detects frustration, confusion, or urgency in the caller's voice — triggering automatic escalation to a human agent before the caller has to ask.

Inbound & Outbound Calls

Handles inbound support and booking calls. Also runs outbound campaigns — appointment reminders, payment follow-ups, lead qualification calls — at scale without a dialling team.

Call Recording & Analytics

Every call is recorded, transcribed, and analysed. Dashboard shows call volume, resolution rate, top call reasons, average handle time, sentiment scores, and escalation rate.

Deliverables

What You Get on Day One

Every deployment includes these fully functional components — branded, configured, and ready for your users.

Voice AI Agent (Inbound + Outbound)
Custom Voice or Cloned Voice Setup
Call Recording & Transcription System
Admin Analytics & Call History Dashboard
CRM / Calendar Integration
Conversation Script & Flow Documentation
How It Works

From Kickoff to Live in Weeks

A structured implementation process that moves fast without skipping critical steps.

01
Conversation Script Design

We map every call scenario — greetings, FAQs, booking flows, objection handling, and escalation — into conversation trees.

Takes 3–5 days. Requires your team to walk us through typical call types.
02
Voice & Persona Setup

Select or record a voice. We tune speaking pace, tone warmth, and filler word patterns to match your brand.

Takes 2–3 days. Voice cloning requires 5–10 minutes of clean audio.
03
Integration & Phone Setup

Connect to your phone number via Twilio/SIP trunking. Integrate calendar or CRM for live data lookups during calls.

Takes 3–5 days. Requires phone number forwarding and API credentials.
04
Test Calls & Launch

We run 100+ test call scenarios with your team, tune edge cases, then go live. Full call monitoring for the first 30 days.

Takes 2–3 days. Your team reviews and approves before launch.
Who It's For

Built for These Businesses

Three distinct use cases — each with measurable business outcomes.

Healthcare & Clinics

60% of after-hours calls handled automatically

Book and reschedule appointments, send pre-visit reminders, answer common patient questions, and handle after-hours urgent triage — without a receptionist on nights and weekends.

Banking & Financial Services

40% reduction in call centre headcount needed

Handle high-volume enquiry calls — balance checks, loan follow-ups, KYC verification, and payment reminders — with full security verification and compliance-safe conversation flows.

Real Estate & Sales

5× more leads followed up same day

Qualify inbound leads on the phone, answer property questions, schedule site visits, and run outbound follow-up campaigns for cold leads — autonomously, at scale.

Build vs Buy

Why Not Build It From Scratch?

Every client asks this. Here is an honest comparison.

Criteria
Build From Scratch
Kotibox Ready-Made
Time to Market
12–24 months
10–18 days from kickoff to live call handling
Development Cost
₹50L – ₹2Cr+
Fraction of cost — ready infrastructure
Team Required
8–15 engineers, PMs, QA, DevOps
Your team focuses on business — we handle tech
Risk of Failure
High — 60% of custom builds go over budget & time
Low — battle-tested in production across clients
Post-Launch Maintenance
Full team needed for bugs, updates, scaling
Included in support plan — we maintain it
Customisation
Full control — but at enormous cost
Full white-label — brand, flows, features
Tech Stack

Built on Modern, Scalable Technology

Enterprise-grade open-source stack — no vendor lock-in, fully maintainable, and cloud-agnostic.

Speech Pipeline
Whisper (STT)
ElevenLabs / OpenAI TTS
Custom Voice Cloning
AI Reasoning
GPT-4o
Claude 3.5 Sonnet
LangChain Agents
Telephony
Twilio Voice API
Vapi.ai
SIP Trunking
WebRTC
Backend
Python (FastAPI)
Node.js
Redis (Session)
Integrations
Google Calendar
Calendly
Salesforce
HubSpot
Analytics
PostgreSQL
Metabase Dashboard
Sentiment ML Model
FAQs

Frequently Asked Questions

Technical, commercial, and implementation questions answered.

Ready-made · Fast Launch

Get a Live Demo of Voice-to-Voice AI

We'll walk you through the full platform, show you the admin panel, and give you a custom pricing estimate based on your scale and requirements.

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