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 Soft PBX solution for purely software-centric markets and expansion levels.

  • Up to 250 users and 250 parallel calls.
  • All COMtrexx functions in one license.
  • Exceptional scalability and cost effectiveness, thanks to the floating user licence model.
  • Available as a hardware appliance or a VM solution.
  • Optimised for COMfortel D-Series SIP telephones.
  • Roaming user functionality, for use with a range of different devices.
  • Fully automated plug-and-play provision for high-volume roll-outs.

COMfortel® D-Series

COMfortel D-Series SIP telephones are optimised to operate with COMtrexx or for integration in existing IT infrastructures, including those from third-party suppliers.

  • HD audio quality with wideband
  • Full-featured native VPN client for home office and branch operations
  • Easier login/logout process on COMtrexx
  • Professional headset connection for maximum productivity
  • Zero-touch provisioning for faster set up
  • Versatility and flexibility of use, thanks to LUA scripts
  • Integrated Ethernet switches to minimise infrastructure costs
  • Dual stack IPv4/IPv6 to future-proof your system


COMuniq – the intelligent SIP trunk solution

  • Future-proof IP telephony link to your Auerswald ICT system
  • Exceptional reliability and availability, 24/7
  • Best speech quality
  • Straightforward inter-site networking
  • Conference rooms for up to 25 subscribers with a fixed phone number
  • Free internal calls, at any location
  • Capacity can be upgraded within a day, to suit changing needs
  • All telecoms costs clearly itemised on a single invoice