The current Version 2.6

Help > About ... > The current Version 2.6

New or revised features published with this release are listed here.

You will find further information about new features in the firmware and the associated documentation on the Internet under Auerswald Support/FONtevo Support.

Important Update Information

Version 2.6.1 is not available on the update server due to extensive changes. Download the firmware file (*.rom) and perform a manual firmware update:

•Administration > Maintenance > Update and Restart > Store firmware in the PBX > Manual Firmware Update

In some cases, it may be necessary to make changes to the configuration. Please refer to the notes in the release notes.

COMfortel Softphone 2

The softphone is now also supported on the second network interface (LAN 2).

New option ICE for finding the best possible transmission route to be found between the softphone and PBX:

•Administration > VoIP > VoIP configuration > Proxy server for Online services > Use ICE

Note: If you experience audio issues, this option should remain disabled.

Improved communication between COMtrexx and COMfortel SoftPhone 2 resolves issues with loading voicemails on the softphone.

Requirement:COMfortel SoftPhone 2 as of version 1.4.0.

Important: Support for the COMfortel SoftPhone (1st generation) will be discontinued on 31 December 2025. This version can therefore only be used to set up the COMfortel SoftPhone 2.

Further help under Softphones

Further help under Network interface (second)

COMtrexx VM

There is now just one COMtrexx VM firmware file (*.rom) for all COMtrexx VM variants (and COMtrexx Advanced).

A new COMtrexx VM variant is now available with COMtrexx VM for Proxmox VE.

Further help under COMtrexx VM variants

External Devices

New and optimised settings pages:

•External Devices > ...

External Telephony

Internal adjustment of SIP processing for improved performance and stability, as well as more reliable operation under high loads. This is accompanied by higher provider compatibility thanks to more flexible setting options.

Note: Provider templates used to date will continue to function after the update.

Note: Provider templates exported after the update are not compatible with older firmware versions.

Note: If available, please use the latest provider templates provided by us:

•Exchange lines > Providers and Accounts > Import > Online configuration

Important: For a stable internet connection, we recommend using the DNS servers provided by your internet service provider:

•Exchange lines > Providers and Accounts > Configure provider > SIP > Name resolution > Use own DNS (via IAD)

•If provider-specific DNS servers are not available or known, ensure that only a single DNS server is used for telephony. If two DNS servers are used in the IP configuration, you can, for example, enter one of them in the provider configuration:

•Exchange lines > Providers and Accounts > Configure provider > SIP > Name resolution > Use own DNS (via IAD)

Note: The configuration of the providers changes as follows with the update:

•More flexible and new setting options for

•Number presentation (outgoing) and

•Number presentation (redirect)

•Elimination of setting options that have become superfluous

•NAT traversal | use parameters ';alias' and ';keep' in the VIA header

•Automatic silence suppression

•Codec settings | Compromise

•STUN server | Interval for STUN server query

•Use URI parameter (user)

•Use Mediasec header in acc. with IETF Draft

•Support T.38 for providers

•Evaluation of incoming SIP messages

Further help under VoIP telephony

Network

A USB network adapter connected to the COMtrexx Next can now be configured as a second network interface (LAN 2).

Important: You can find the technical requirements and a list of compatible USB network adapters at: Auerswald Support

The softphone is now also supported on the second network interface (LAN 2).

New and optimised settings pages:

•Network > ...

Important: Network settings from backups of older firmware versions (older than 2.6.1) can no longer be used. When importing such a backup, deactivate the restoration of network settings.

Further help under Network interface (second)

Further help under Network

Further help under Backup

Certificates SIPS/SRTP

For SIPS/SRTP, only one certificate is now required: the root certificate. Provisioned phones with RTP encryption enabled will automatically receive the new, valid certificate after the update.

Important: For phones that have not been provisioned, the new root certificate must be exported once and imported into the relevant phones.

Further help under Certificates