# Closerr — AI Voice Telephony & Calling Platform

> Closerr is an enterprise AI telephony platform engineered for ultra-low latency (<400ms) voice agents with native Indian regional language intelligence (Hindi, Hinglish, Tamil, Telugu, Kannada, Bengali, Gujarati, Marathi) and global telephony SIP/WebRTC connectivity.

Closerr enables organizations to automate high-volume outbound lead qualification, real-time appointment scheduling, customer support, and survey campaigns with pay-per-minute pricing, zero seat licenses, and strict TRAI DND and DPDP Act 2023 compliance.

## Platform Capabilities & Technical Specifications

- **Latency Benchmarks:** Sub-400ms end-to-end response latency powered by streaming speech-to-text (STT), speculative LLM tokens, and neural streaming text-to-speech (TTS).
- **Regional Speech Engines:** Native integrations with Sarvam Saaras v3, Bulbul v2, Cartesia Sonic 3.5, and ElevenLabs Turbo v2.5.
- **Context-Aware Retrieval (CAG):** In-memory Redis caching of organizational knowledge, reducing Time-to-First-Token (TTFT) to <5ms for cached FAQs and bypassing costly LLM generation.
- **Telephony Protocols:** Standard Session Initiation Protocol (SIP) trunks, licensed telecom virtual numbers (Vobiz, Exotel), and Real-Time Communication (RTC) over LiveKit.
- **Conversational Intelligence:** High-frequency Voice Activity Detection (VAD) with instant acoustic interruption cancellation when the caller speaks.

## Regulatory & Legal Guardrails

- **India (TRAI / Telecom Regulations):** Automated National Do Not Disturb (DND) registry scrubbing, customer preference filtering, and audit log generation.
- **Privacy & Data Protection:** Full compliance with the Digital Personal Data Protection (DPDP) Act 2023. Closerr acts as a Data Processor for contact lists/call transcripts and a Data Fiduciary for business account credentials.
- **US / Global (TCPA / FCC):** Mandatory prior express written consent affirmation on campaign queues, call recording disclosures, and transparent AI agent self-identification within the first 10 seconds.

## Pricing Structure (All-Inclusive)

All pricing tiers include Speech-to-Text (STT), LLM Intelligence, Text-to-Speech (TTS), and carrier telephony minutes with transparent per-minute wallet billing.

- **Starter Plan:** ₹1,999/mo (includes ₹1,000 call credits). Usage at ₹5.00/min with Sarvam regional Hindi models.
- **Growth Plan:** ₹4,999/mo (includes ₹5,000 call credits). Usage at ₹7.00/min with Cartesia neural voice and RAG knowledge search.
- **Enterprise Pro:** ₹14,999/mo (includes ₹15,000 call credits). Usage at ₹9.00/min with ElevenLabs voice and uncapped concurrent channels.
- **International Calling:** Starting at $0.06/minute globally.

## Core URLs & Documentation

- [Homepage](https://closerr.app): Main platform overview and live interactive voice dialer simulator.
- [Pricing & Plans](https://closerr.app/pricing): Transparent cost breakdown, plan features, and ROI comparison.
- [Cost & ROI Calculator](https://closerr.app/cost): Interactive telephony cost calculator comparing Closerr against human agents, Bland AI, and Trikon.
- [Use Cases](https://closerr.app/use-cases): Automated workflows for high-growth enterprises.
  - [Lead Qualification](https://closerr.app/use-cases/lead-qualification): Real-time buyer intent qualification and CRM enrichment.
  - [Appointment Booking](https://closerr.app/use-cases/appointment-booking): Real-time calendar syncing via Google Calendar, Outlook, and Cal.com.
  - [Customer Support](https://closerr.app/use-cases/customer-support): Inbound customer care, FAQ resolution, and intelligent warm transfers.
- [Industries](https://closerr.app/industries): Tailored vertical workflows.
  - [Real Estate](https://closerr.app/industries/real-estate): RERA-compliant buyer qualification and walkthrough booking.
  - [Healthcare & Clinics](https://closerr.app/industries/healthcare): Doctor appointment scheduling, OPD coordination, and PHI protection.
  - [Financial Services](https://closerr.app/industries/finance): RBI-compliant loan eligibility verification and payment reminders.
- [Resources & Guides](https://closerr.app/resources): Technical whitepapers on voice latency, consent guidelines, and CAG caching architecture.
- [Help Center](https://closerr.app/help-center): Developer documentation, API references, SIP configuration, and campaign setup guides.
- [Privacy Policy](https://closerr.app/privacy): DPDP Act 2023 & GDPR compliance terms.
- [Terms of Service](https://closerr.app/terms): Telephony terms, acceptable use policy, and SLA guarantees.
- [Refund Policy](https://closerr.app/refund): Transparent pre-paid wallet balance refund policy.
- [Full LLM Knowledge Dossier](https://closerr.app/llms-full.txt): Comprehensive deep-dive specification for LLM ingestion.

## Contact & Grievance Desk

- **Corporate Address:** Closerr Technologies, Cyber City, Gurugram, Haryana 122103, India
- **Phone:** +91 80715 80004
- **Customer Support:** support@closerr.app
- **Privacy & Grievance Officer:** privacy@closerr.app