telli technologies GmbH
telli develops AI-powered telephone agents that automatically handle customer calls for B2C companies.
Signature Fix
Agents
AI remains isolated instead of effective
Our Solution
Our voice agents conduct natural phone conversations: They answer incoming calls and also call customers back on their own initiative. They handle appointment scheduling and routine inquiries without putting customers on hold. If a situation becomes more complicated, the team takes over and has the entire conversation history at their fingertips.
Main Fix
Journey
Customer experience is not consistent
Our Solution
Customer journeys often come to an abrupt end over the phone—for example, when the hotline is overwhelmed or no one calls back after a request is made. telli bridges these gaps in both directions: Incoming calls are answered immediately, and open requests are actively followed up on. Together with Vaillant, we’ll show you how this works in everyday life.
Main Fix
Scaling
How do you scale AI? The pilot is running – but there’s no clear path forward.
Our Solution
Seasonal spikes and high call volumes are difficult to handle with staff alone. With telli, companies can go live in one to two weeks and scale from their first test calls to thousands of calls without having to hire new people.
Stand: C24
Agenda Items
20.10.2026
17:15
Impact Stage
Journey
Rethinking the Customer Journey with Voice AI—How Vaillant Uses telli to Optimize Availability, Team Capacity, and Customer Experience
Philipp Baumanns
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telli
Irma Kujovic
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Vaillant Germany
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