Case Study · Sales Funnel System · Rhine-Main

Sales Funnel System — more deals, less manual work.

How we built a custom AI sales tool for a B2B team that acquires by phone daily. Conversation coaching, integrated CRM and team analytics - on your own server, no cloud subscription, fully GDPR-compliant.

55+
Conversation Steps
7
Decision-Maker Types
100%
Real-Time AI Analysis
3 in 1
Coach · CRM · Analytics
GDPR
Your Own Web Server
The Challenge

B2B sales by phone - but without a system.

A B2B sales team acquires business customers daily by phone - structured, under time pressure. The problem: processes that cost time instead of closing deals.

The Problem

  • Conversation scripts stored in Word documents
  • Leads managed in Excel spreadsheets
  • Manual data entry after every call
  • No visibility into team performance
  • Lost leads, inconsistent conversations

The Goal

  • One system instead of three tools
  • AI coaching live during the call
  • Automatic lead capture
  • Measurable results per agent
  • No data held by third parties
The Requirements

Three requirements. One system.

No third-party CRM, no monthly licence fees, no data at external providers - yet everything a modern B2B sales team needs.

Conversation Guidance

Structured, repeatable, ready for every agent from day one - with real-time AI coaching that responds to the current stage of the conversation.

Lead Management

Centralised, team-ready, with full call history and automatic lead scoring. No more manual transfers between tools.

Team Analytics

Who performs how, which arguments work, where is the potential: measurable at a glance, exportable as PDF.

Live in the Browser

How it looks: live in the browser.

The AI conversation assistant runs directly in the web browser - no download, no setup. Agents open the tool, select the conversation type and get guided step by step through the call.

🔒 sales-funnel.ventas-webdesign.de · AI Conversation Assistant
CRM Dashboard - Sales Funnel Tool by Ventas Webdesign Dashboard · Lead Management & CRM
Conversation Guidance
Step-by-step script with real-time AI coaching
CRM Integrated
Lead capture and call history in the same tool
No Setup
Open browser, log in, start selling - on any device
View Live Demo
The Solution

What the tool does.

A web-based B2B sales tool built to match the team's processes exactly - from the first call to closed deal. Everything in one system. Everything in real time.

📞

AI Conversation Coach

An interactive decision tree guides agents step by step through the call: 55+ steps, 7 decision-maker types, ready-made objection responses. Claude AI (Anthropic) analyses the situation in real time and gives concrete coaching hints on screen.

🖥

CRM & Lead Management

Create, search, filter and prioritise leads - with automatic duplicate detection, full call history and a lead score calculated from conversation data. Follow-ups, appointments and ICS calendar export integrated directly.

📊

Team Analytics

Win rate, average AI score, call duration - per agent, at a glance. Plus an A/B analysis of which arguments, decision-maker types and times of day produce the best results. Monthly reports as PDF at the click of a button.

🔒

Security & Control

Role-based user management, automatic session timeout after inactivity, full login log in the admin panel. All data resides on your own server - no cloud subscription, no dependency on third parties.

How We Built It

Lean architecture. Maximum control.

01

Requirements Analysis

Directly with the team: what slows down sales, what costs time, what has to work from day one?

02

Iterative Development

Every feature - from login to automatic session timeout - tested and adjusted directly with the sales team.

03

AI Integration

Claude Haiku API (Anthropic) for real-time coaching. PHP backend with SQLite - no framework overhead, no vendor lock-in.

04

Go-Live & Operations

Deployed via FTP on standard web hosting. Running from day one. No onboarding time needed, no licence costs.

Frontend
Single-Page App · Vanilla JS · No framework
Backend
PHP · SQLite · Apache Basic Auth
AI
Claude Haiku API (Anthropic) · Real-time coaching
Hosting
Your own web server · Ready to deploy · No extra costs
The Result

One system running every day.

A live system in daily use. No onboarding time, no licence costs, no data at third parties. And a sales team that now knows exactly who does what, how well.

No Licence Costs

One-time development, ongoing operation - no monthly SaaS fees, no vendor lock-in.

Full Data Control

All conversation and client data on the team's own server - GDPR-compliant, no cloud subscription.

Measurable Performance

For the first time: clear data. Which arguments work, which agents perform, where real potential lies.

Three Tiers

The right fit for every team size.

From first AI support to a complete sales intelligence system. All tiers run on your own server, no monthly licence costs.

Starter

Entry Level

from €3,000
one-time · no subscription
  • AI conversation assistant
  • Decision tree (55+ steps)
  • 3 decision-maker profiles
  • Basic lead capture
  • 2 user logins
Enterprise

Full Build

from €8,500
one-time · no subscription
  • Everything in Professional
  • Team analytics & win rate
  • A/B argument analysis
  • Monthly reports as PDF
  • Unlimited users
  • Live training (online / on-site)

All prices excl. VAT · Custom requirements on request · Also available as rental/leasing

Live training included: online (Zoom / MS Teams) or on-site at your premises.

Direct Comparison

Custom solution vs. HubSpot & Salesforce.

What is the difference between a custom B2B sales tool and standard CRMs? This comparison covers the key points at a glance.

Criterion Custom Solution (Ventas) HubSpot Sales Hub Salesforce Sales Cloud
Cost One-time from €3,000 from €90/user/month from €150/user/month
Data storage Your own server Cloud (USA/EU) Cloud (USA)
GDPR compliance ✓ Full Limited Limited
AI conversation coaching ✓ Integrated ✗ Not available Paid add-on
Customisability 100% individual Limited Complex, expensive
Vendor lock-in ✓ None ✗ High ✗ High
Setup time 4 to 8 weeks 2 to 6 weeks 3 to 6 months
Live training ✓ Included Paid extra Paid extra
Personal contact ✓ Direct Standard support Standard support

Competitor prices: as of 2026, entry-level plans. Deviations possible depending on team size and contract.

also available as rental/leasing. Get in touch to discuss.

incl. live training for your agents (online via Zoom or MS Teams) or on-site at your premises.

FAQ

Questions & Answers.

What is a sales funnel system?
A sales funnel system combines traditional B2B sales processes with artificial intelligence. Instead of Excel spreadsheets and Word scripts, your team works with a web-based tool that structures conversations, automatically captures leads and delivers real-time AI coaching - all on your own server.
How much does a custom B2B sales funnel tool cost?
Development is a one-time project with no ongoing licence fees. Typical projects range from €3,000 to €10,000 depending on requirements. Compared to monthly SaaS subscriptions, the investment pays off quickly - usually within the first year.
What is the difference compared to HubSpot or Salesforce?
Standard CRMs offer generic features - often too much, often the wrong things, always with monthly costs. Our approach: a tool that maps exactly your processes, runs on your own server and transfers no data to third parties. No licence fees, no cloud dependency.
How long does development take?
A first functional system is typically ready within 4 to 8 weeks. The exact timeline depends on scope and complexity. We develop iteratively - you see first results early in the process, and every feature is tested directly with your team before launch.
Is the tool GDPR-compliant?
Yes. All data - conversation history, leads, user behaviour - resides on your own web server. No cloud subscription, no data transfer to third parties. The only external connection is the AI API (Anthropic), which analyses conversations in real time but stores no customer data on its servers.
Who is this tool suitable for?
Primarily for B2B sales teams that acquire business customers by phone daily and currently work with Excel, Word or multiple non-integrated tools. Ideal from 3 to 5 agents - at that scale the investment pays off particularly quickly, and the productivity gains become immediately visible in the analytics.

Similar requirements?

We build tools that fit your processes exactly - not the other way around. Free 30-minute consultation, no obligation, no sales pressure.

View Live Demo