BRATUX Aufrufsystem

In many practices, calling patients is still analog: names are shouted into the waiting room, doors open and close, and the front desk is constantly interrupted. At the same time, every practice runs its own software — a rigid per-site solution would have been neither maintainable nor scalable.

The requirements: any number of practices on one platform, calls created manually at the front desk as well as automatically from third-party systems, a waiting-room display with spoken announcements — and per-practice branding, all without on-site server infrastructure.

We built the call system as a multi-tenant web app: every practice is a tenant with its own login, branding and API credentials. The public display screen for the waiting-room monitor refreshes continuously and speaks calls via the Web Speech API — with a configurable alert sound, speed and voice profile.

For external systems there is a dedicated ingest API: practice software, phone systems or IoT buttons push name and room via POST, authenticated with a channel ID and API token. Tenants manage calls, design and API keys self-service; an admin dashboard handles onboarding, device limits and session management.

Operations run as a Docker Compose stack — Next.js app, PostgreSQL, Cloudflare Tunnel — behind the bratux.com zone. Per-role rate limits, server-side sanitized custom CSS and an audit log keep the system controlled despite its public display surface.

The system runs in production at call-system.bratux.com: the front desk creates calls — or they arrive straight from the practice software — and seconds later they appear, announced aloud, on the waiting-room screen. New practices can be onboarded without any deployment.

How continuous this operation is shows in the zone's Cloudflare data: 1.92 million requests in 30 days from 154 unique visitors — the displays refresh around the clock. With a 0.04% cache ratio and 5 GB of traffic, virtually every request is live data — and the single-host stack carries that without additional infrastructure.