With scalability up to 250 users, with 250 simultaneous calls permanently available, the COMtrexx Soft PBX solution is the perfect basis for large expansion stages. Combined with the transparent and flexible user licence model, a continuous expansion of the system is possible at any time.
The perfectly optimised connection to the SIP terminals of the COMfortel D series guarantees seamless and convenient interaction between the two Auerswald systems.
| Languages | Current version | ||
|---|---|---|---|
| Operation Instructions | V13 06/2025 | Online PDF | |
| V13 06/2025 | Online PDF | ||
| Instructions | V09 03/2025 | ||
| Privacy Policy | V10 12/2025 | ||
| COMtrexx Control Center - Privacy Policy | V04 10/2024 | ||
| COMtrexx Control Center - Operation Manual | V07 12/2024 | Online PDF | |
| V07 12/2024 | Online PDF | ||
| COMmander/COMpact PBX as a/b gateway | V02 11/2022 | ||
| V02 11/2022 | |||
| V02 11/2022 |
General information
Help/Instructions for COMtrexx from firmware version 2.4.6
Changed descriptions
Updated/extended addresses.
Updated/extended information on multi-level call forwarding and call forwarding loops.
Updated information on the changed web interface.
Updated information on the changed setting.
Removed descriptions
Query and programming digit sequences no longer supported removed.
General information
Help/Instructions for COMtrexx VM
Changed descriptions
Notes updated regarding MFA, system events and sequence.
Revised information on requirements and optimisation of performance.
Editiorial changes
Direct links to the COMtrexx VM information in the COMtrexx help
General information
Instructions for COMmander/COMpact PBXs as a/b gateway on a COMtrexx
Changed descriptions
Information on the firmware version added.
Information on the setting of exchange line authorisation added.
For the following products:
Language:
The required settings are described in the respective help for the telecommunications systems.
Requirements
via UCConnect / Mobility Services (a paid additional service from Estos)
- or -
configured according to the Estos best practice article https://support.estos.de/en/procall-enterprise/best-practice-ucserver-fuer-procall-mobile-apps-einrichten
Compatible web browsers
Chromium-based browsers, for example:
The following are not supported:
PBX Call Assist Web does not support use on mobile devices such as smartphones or tablets running Android or iOS.
The respective PBX Call Assist Mobile App (for Android or iOS) should be used.
Note: The PBX Call Assist Client for Windows should be closed before using PBX Call Assist Web, if necessary.
Port Forwarding
The PBX Call Assist Web WebRTC application runs as a website (https://auerswald.procall.de) within a web browser and is delivered via the https protocol. This requires the https port (443, outbound) to be forwarded.
In summary, the most common port forwarding requirements for WebRTC are:
