No call lost
Every request is captured and routed.
06 / 08 — Services
Real-time & VoIP
In short
When milliseconds matter you need a different architecture. We build phone systems based on Asterisk, live features with WebSockets and multiplexing, and AI-powered voice assistants that answer, understand and route calls.
01
How it works.
The typical data flow — from input to result. Every station is replaceable and adapted to your systems.
- 01Call (SIP)
- 02Asterisk
- 03Speech recognition
- 04AI assistant
- 05CRM & routing
02
What we deliver
Telephony, live communication and WebSockets — right up to the AI phone assistant.
- 01VoIP phone systems with Asterisk on Linux
- 02Dial plans, IVR menus and queues, including in Lua
- 03AI phone assistant: speech recognition, summarisation, routing
- 04Real-time communication with Socket.io, Elephant.io and Yamux
- 05Live dashboards, chat, notifications and tracking
- 06Integration with CRM and ticketing systems
03
A look at the code.
This is what an excerpt from a typical project looks like — readable, commented and without magic. That is exactly how we hand code over to your team.
extensions = { eingang = {
["s"] = function(ctx, ext)
app.answer()
local anliegen = ki.zuhoeren(channel, { sprache = "de-DE", max = 20 })
local ziel = ki.einordnen(anliegen) -- Vertrieb | Support | Termin
crm.notiz(channel.CALLERID("num"):get(), anliegen)
app.dial("PJSIP/" .. ziel, 30)
end
}}04
What you get out of it.
Real time, no lag
WebSockets instead of constant polling.
Open standards
SIP, Asterisk, WebSocket — no proprietary lock-in.
Seamless hand-over
From assistant to human with full context.
05
Typical scenarios
06.1
Hotline with AI pre-filter
Requests are captured and summarised before a human takes over.
06.2
Call centre integration
Callers are recognised in the CRM, conversations documented automatically.
06.3
Live tracking
Vehicles or jobs on the map in real time.
06.4
Collaboration
Real-time co-editing with presence and synchronisation.
06
Matching solutions.
S3 
AI phone assistant
An Asterisk system with speech recognition and a language model: capture requests, answer standard questions, summarise, route.
- No call without a note
- Prioritised call-backs
- Seamless hand-over to staff
S4 
Offline-capable field-service app
A native or Flutter app with offline database, photo documentation, signatures and sync as soon as there is signal.
- Report done on site
- No lost photos
- Data straight to the back office
07
Frequently asked questions
Can an AI answer phone calls?
Yes. Speech recognition, a language model and speech synthesis can be connected to a phone system such as Asterisk. The assistant answers standard questions, records requests and hands over to humans.
What is the advantage of WebSockets?
WebSockets keep a persistent connection between browser or app and server, so messages and status changes arrive instantly — without constant polling.
Do you also operate the phone system?
If you like, yes: setup, hardening, updates and monitoring of your Asterisk servers.
More services
01 / 08
AI Agents & RAG
LLM applications that work with your data and complete tasks on their own.
02 / 08
Local AI Models
Language models on your own hardware — data-sovereign, no cloud dependency.
03 / 08
AI Automation
Business processes that run themselves — with intelligent assistants and integrations.
Ready when you are
Let’s talk.
Describe your project in a few sentences — you’ll get an honest assessment of feasibility, effort and the way forward.
- info@quell-code.com
- Phone
- Call-back on request
- Response time
- usually 2 working days
- Languages
- Deutsch · English · Türkçe