Your documents — answers over the phone.
Upload PDFs, price lists and manuals. The AI uses them as a knowledge base for every call, every email, every chat — with source references, always up to date.
Why a knowledge base for your AI?
Because ChatGPT doesn't know your prices. And the printed price list at reception is from 2024. A RAG knowledge base solves both problems at once.
From your real documents
Price lists, Terms & Conditions, product data sheets, FAQ lists, employee phone book — whatever you upload, the AI knows. Whatever you update, the AI can use immediately.
With a source reference
The AI names the source: "according to the 2026 price list, page 4". You can always check where the answer comes from. Hallucinations are virtually impossible.
Always up to date
Upload a new version of the price list? The AI uses it immediately. The old version is archived. In case of conflicts, the system warns you.
Stays with you
Your documents stay on voiceOne servers in Germany. No upload to OpenAI, no training use, no data export.
RAG knowledge base features
A complete knowledge-retrieval pipeline without custom-build effort.
PDF, Word, Excel, HTML, Markdown
Drag & drop and the AI understands. Tables, lists, headings, embedded images with OCR.
- Up to 500 MB per file
- Auto-OCR for scans
- Tables are captured with structure
Your own website as a knowledge base
Specify URLs, we crawl and keep them fresh. Ideal for FAQ pages, help centres, blog content.
- Cron job 1x per day
- Sitemap-based
- Protected areas via token
API to your ERP / PIM
Price list, stock levels, delivery time directly from your system. Live query, no re-indexing needed.
- JSON / REST / SQL connector
- Caching with TTL
- Auth token stored securely
Multi-lang for phone calls
A German source is automatically used for English, French, Spanish calls too. Translation with source linking.
- 13 languages out-of-the-box
- Sector vocabulary
- Separated per tenant
What the AI may say
Blocked words, topic bans, escalation triggers. Different per sector (law: no legal advice; medicine: no diagnosis).
- Compliance templates
- Audit log per response
- Sandbox mode for testing
The AI learns as it goes
If the AI couldn't answer a question 5 times, it automatically suggests a new FAQ entry.
- Gap analysis per week
- Top enquiries without an answer
- Auto-draft of new entries
voiceOne RAG vs. ChatGPT Custom-GPT vs. in-house build
Three ways to train an AI on your documents. What you really need.
| Feature | voiceOne RAG | ChatGPT Custom GPT | Build your own (e.g. LangChain) |
|---|---|---|---|
| Phone integration | Fully integrated | No | Custom build required |
| Source reference at the caller's end | Yes | Sometimes | Build your own |
| File upload PDF/Word | Directly in the UI | In the UI | Build your own |
| Website crawler | Included | Not out of the box | Build your own |
| API to your own systems | REST/SQL ready | Via Action API | Build your own freely |
| Servers in EU/DE | Germany | US (sub-processor) | Self-hostable |
| Data not used for training | Yes, contractually | On Enterprise | Self-hosted |
| Auto-update | Included | Manual | Build your own |
| Compliance templates | Industry setups | No | No |
How our customers deploy it
Three real configurations.
Tax firm, Berlin
200 pages of client FAQ, terms & conditions and fee schedule as the RAG base. The AI answers standard enquiries on deadline topics, document submission and case status — with a direct reference to the relevant rule.
Outdoor mail-order company Bayern
Product PIM with 4.800 SKUs as an API source. The AI knows delivery time, stock levels, warranty terms live. Phone orders are pre-qualified, cross-sells suggested.
Commercial law firm Frankfurt
Internal client FAQ as the RAG basis. But: NEVER legal advice on the phone. The AI only gives procedural pointers and appointment availability. Blocked words: "Klage", "einreichen" → Eskalation an Anwalt.
Included in the voiceOne plan
Get in touch with us for a bespoke quote. We configure volume, users and add-ons to suit your sector.
Request a personal consultation
30 minutes with a RAG consultant. We analyse which sources are worthwhile and which compliance stop signs need to be set.
Frequently asked questions
Knowledge base set up in 30 minutes.
Upload documents, test in the sandbox, go live. 14 days free.