How does the “smart standard” Volubile work: a vocal conversational infrastructure at scale

A technical architecture based on 4 fundamental building blocks

The technological core of Volubile is based on the orchestration of 4 key components :

• Speech recognition (STT) : conversion of the audio signal into text, using engines like Azure , Deepgram , etc.‍
• Language model (LLM) : interpretation of the intention and generation of response, with the best models on the market (GPT , Gemini , Claude , etc.), enriched by a agentic approach (state management, business logic) and a RAG architecture (injecting business context from vector databases).
• Text-to-speech (TTS) : reproduction of the response in natural voice, with a multi-lingual panel of voices selected from the best providers (ElevenLabs , Azure , Cartesia , etc.), configured to optimize prosody, rhythm and expressiveness.
• ‍Telephony at scale : call orchestration, routing, supervision, with the ability to manage thousands of simultaneous conversations and hundreds of thousands of calls per day, incoming and outgoing.

These bricks are orchestrated by a Conversational heart owner, designed to guarantee a smooth, reliable and industrializable experience.

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Recognize, understand, answer, call

1. STT (Speech-to-Text)

The engine is automatically selected according to the customer's business context.
The objective: to maximize precision in real environments (noise, accents, telephone quality).

2. LLM + Agentic + RAG

Volubile relies on the LLMs on the market, enriched by:

• one agentic approach : conversational state management, dynamic adaptation, business logic,
• one RAG architecture : injecting business context from internal or customer vector databases.

This combination allows reduce hallucinations, adapt responses to the job, and managing complex conversations.

3. TTS (Text-to-Speech)

Volubile offers a multilingual voice panel, selected for their expressiveness and clarity.
Each voice is configured according to the use case: tone, rhythm, prosody, language.

4. Telephony at scale

Volubile integrates an orchestrator capable of:

• plan campaigns,
• dynamically route calls,
• monitor performance in real time.

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Latency: an engineering challenge

Latency is the main factor of naturalness.
Volubile is designed to meet in less than 800 ms, thanks to:

• Audio streaming from the first syllable,
• pre-generation of frequent responses,
• Anticipated speech synthesis,
• optimizing cloud infrastructure (horizontal scaling, semantic caching, fast embeddings).

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Supervision, security, compliance

Volubile is hosted in Europe, RGPD compliant, with Encryption of flows and anonymization of data. Each call is analyzed in real time:

• grounds for appeal,
• redirects,
• hot satisfaction.

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The “smart standard”: the first step

The majority of businesses start with a simple need: “I want someone to answer the phone, even when my teams aren't there.”

It is the role of Smart standard :

• Answer 100% of calls instantly
• Understand the demand.
• Inform, process, transfer, or schedule a reminder.
• Automatically record the reason for the call in the CRM or calendar.

This first use case is deployed in a few days, and allows Solving problem number 1 : never miss a call.

It is then used as a base to automate:

• prospecting,
• the reminders,
• order tracking,
• incident management.

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What differentiates Volubile from American platforms

American platforms like Bland, Vapi or Retell are designed for developers. They offer a modular approach: choose your STT engine, TTS, LLM, etc., write your prompt, configure API calls, host models.

This flexibility is powerful, but it involves:

• a high level of technical complexity,
• risks of latency,
• significant operational responsibility.

Volubile is making a different choice. We are a business platform, with a qualified, supported and supervised approach.

• Accompanied deployment : structured onboarding, business configuration, continuous supervision.
• Infrastructure operated : cloud orchestration, scalability, monitoring.
• Business performance : agents optimized for real use cases, not for experiments.

Volubile manages thousands of simultaneous conversations, hundreds of thousands of calls per day, and integrates natively with your business tools.

That's what makes Volubile a conversational infrastructure, not a technical toolkit.

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