360° COMmunication

Everything from a single source, for every company and sector. Flexible and available, wherever and whenever it's needed – that's what we want from communications technology nowadays. We are one of the few manufacturers in this sector who can provide a comprehensive portfolio of products and services that work seamlessly with each other, and are designed to suit your exact requirements. From ICT systems to the very latest telephones, IP DECT systems, SIP trunks and cloud services: we aim to create a tailor-made solution for you, with products and services of the exceptional quality for which Auerswald is renowned. COMmunication is our passion, and has been for more than 60 years – we're proud to say "Made in Germany".


Find out why Christian Auerswald believes his company is ideally positioned to meet the challenges of the future here.
(Interview is in German)



The COMtrexx provides the right soft PBX solution for every requirement. It is available in three different versions as a hardware appliance or as a VM solution. Your benefit - the simple pricing: You receive the complete range of functions in just one license.

  • Up to 250 users and 250 parallel calls
  • Flexible integration into your existing system landscape
  • High scalability due to the floating user license model
  • Easy handling through zero-touch provisioning

COMfortel® D-Series

Our COMfortel D-Series stands for a broad line-up of standard SIP phones with premium features for all budgets and customer requirements. The D-Series offers special benefits when used with COMtrexx, but is also suitable for integration with other systems - including those from third-party providers. Benefit from the advantages of the D-Series now.

  • HD audio quality with wideband
  • Full-featured native VPN client for home office and branch office operations
  • Maximum productivity through professional headset connection
  • Freely assignable function keys to make everyday work easier
  • Zero-touch provisioning for short setup times


This intelligent SIP trunk solution is the future-proof connection of your Auerswald ITC system to a modern IP telecommunications infrastructure. Enjoy the best voice quality via the Internet and take advantage of the possibility to flexibly adapt the telephony capacity to your requirements within the shortest possible time!

  • Highest reliability and availability 24/7
  • Simple site networking
  • Free internal calls - also across locations
  • Conference rooms for up to 25 participants with fixed telephone numbers


As Unified Communications & CTI software, PBX Call Assist provides you with a seamless transition between office and home office. You can be reached on all your end devices with just one phone number. Thanks to the additional chat function, we also make your everyday work easier with a fast and uncomplicated exchange of information.

  • Platform-independent communication for PC, laptop, tablet or smartphone
  • SIP softphone as a virtual telephone for desktop and mobile clients
  • Presence management for displaying the availability of your team
  • Video conferencing and chat for internal information exchange with maximum security of company data