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, please turn on subtitles)



The COMtrexx provides the right soft PBX solution for every requirement. It is available in 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.

  • Perfect for micro-enterprises and SMEs with up to 250 employees
  • Simple integration into existing system landscapes
  • High scalability thanks to flexible user management
  • One-number concept: telephony with one number, even when working from home or mobile
  • Flexible working with up to 5 end devices per user
  • floating user licence model: Simple implementation of alternating workstation models

COMfortel® D-Series

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

  • HD audio quality with wideband support
  • Full native VPN client for home office and branch office operation
  • Freely assignable function keys to make everyday work easier
  • Zero-touch provisioning for short set-up times
  • Support for multicasting, text messages and "silent alarm"
  • Executive secretarial function

COMfortel® SoftPhone

COMfortel SoftPhone is the cost-efficient, up-to-date and intuitive solution for the implementation of mobile workplace concepts for COMtrexx and COMpact systems. SIP telephony and company-wide chat enable the integration of every employee and availability from all locations - whether in the office, at home or on the go. Benefit from all the advantages of an on-prem solution with secure, always available cloud technology with quality Made in Germany.

  • Entry level soft client for SIP telephony and messaging
  • Secure and simple PBX connection from anywhere via our free cloud service
  • Cross-platform: Apps for Windows, iOS & Android

PBX Call Assist

Maximise accessibility and productivity in your everyday business life. PBX Call Assist is the Unified Communications & CTI software for the highest demands in the office, at home and on the move. You can be reached on all your end devices with just one phone number.

  • Simple implementation of platform-independent one-number concepts for PC, laptop, tablet or smartphone
  • Maximum user-friendly working environment with video, chat and presence management
  • New: Direct Microsoft Teams integration saves costs, reduces communication channels and increases productivity
  • Bonus: All updates / upgrades included until 31.12.24

COMuniq Voice

Secure and stable voice connections between customers and employees form the basis for long-term success in every industry. COMuniq Voice, Auerswald's SIP trunk, is your connection for the future and enables crystal-clear telephone calls over broadband Internet. In addition, you can book further individual cloud services as an upgrade for existing IP telephone systems.

  • Additional smart services from the cloud: FMC Connect, e-fax, Meeting 25 stand-alone
  • High reliability thanks to guaranteed availability of cloud technologies
  • Scalable IP communication, flexibly adaptable - without a contract period