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COMfortel® D-400

The COMfortel D-400 combines the practical design and elegant minimalism of the D series with the functional range of a professional communication solution for the highest demands. This guarantees impressive performance and maximum efficiency in everyday business.

High-resolution 4.3" TFT display with capacitive touch function, HD audio quality thanks to wideband and a headset connection with DHSG/EHS support for free hands when making calls – the COMfortel D-400 leaves nothing to be desired.

Downloads

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Designation
Operating system

V2.12A00000 (Stable) | 22.05.2025
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Documentations

LanguagesCurrent version
Statements of conformity D-400 V03 05/2025 PDF
Instructions V06 05/2025 PDF
Advanced Information V13 05/2025 Online PDF
V13 05/2025 Online PDF
V13 05/2025 Online PDF
Privacy Policy V04 05/2025 PDF
Quick Guide V01 12/2019 PDF

Instructions

V06 05/2025

General Information

Instructions for COMfortel D-400 from firmware version 2.4


Adaptations for the Energy Efficiency Directive (Regulation (EU) 2023/826)

Link to the help topic Detailed information on energy consumption


Editiorial changes

Sorting/highlighting in safety instructions.

V05 08/2024

General Information

Instructions for COMfortel D-400 from firmware version 2.4


Editiorial changes

Links to D-Series help with improved and comprehensive information.


Advanced Information

General Information

Help/instructions for phones of the COMfortel D-Serie from firmware version 2.12


Adaptations for the Energy Efficiency Directive (Regulation (EU) 2023/826)

Terminology changes

Idle state modified in Power management function

New Information

Detailed information on energy consumption


Changed descriptions

Update process via a USB storage medium

Update description added.

Current version

Information on the new firmware version 2.12

Voice mailbox function key

Function key description added.

Multicast IP Address

Information on the IP address added.

WireGuard App (only COMfortel D-400/600)

App description added.


Several editiorial changes

Sorting/highlighting in safety instructions.

Privacy Policy

For the following products:

  • COMfortel D-100
  • COMfortel D-110
  • COMfortel D-200
  • COMfortel D-210
  • COMfortel D-400
  • COMfortel D-600

For the following firmware:

  • 2.8

Language:

  • German
  • English
  • French

Videos

Provisioning of COMfortel IP phones and phones of the D-series via the PBX

Welcome to our video tutorial. In this video we show you how the FONtevo IP phones COMfortel 1400IP/ 2600IP/ 3600IP and…

COMfortel D-Series - The new COMfortel D-400

Attractive. Efficient. Flexible. With the new COMfortel D-400, Auerswald is expanding the COMfortel D series, which was…

Transferring with announcement via touch function key

COMfortel D-400 Transferring with announcement via touch function key

Transferring with announcement via touch function key

COMfortel D-400 Transferring with announcement via touch function key

Transferring with announcement

COMfortel D-400 Transferring with announcement

Transferring during call phase

COMfortel D-400 Transferring during call phase

Setting up function keys via phoneUI

COMfortel D-400 Setting up function keys via phoneUI

Setting up function key via WebUI

COMfortel D-400 Setting up function key via WebUI

Setting up LDAP via WebUI

COMfortel D-400 Setting up LDAP via WebUI