Turbine 9.2 - Release notes

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This document provides the release notes for VSF-Turbine 9.2 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after VSF-Turbine 9.1.3.4.

VSF-Turbine (vsft) is a firmware for Zenitel devices based on the IMX28 processor.

Release info

Name: VSF-Turbine
Description: VSF-Turbine is a firmware for Zenitel devices based on the IMX28 processor.

The firmware is delivered in two different ZIP archives and one swu file:

• vsft-9.2.x.x - Used for standard in-field upgrades
• vsft-prod-9.2.x.x - Used in production- and recovery upgrades

Version: vsft-9.2.3.3
Date: 28.08.2025
Status: General Availability

VSF-TURBINE 9.2.3.3

Fixed Issues

MTN-4794 Turbine Industrial Devices - Issue with handset speaker gain 18 dB too high (high risk of clipping) has been fixed

The reference config 0 dB for industrial handset applied 18 dB too high gain on handset speaker on TFIE-x, TFIX-x, TFIX-x-V2, IPHDT-x and TKIE-x. Note! Fix will direct impact effective gain after upgrade, so gain configuration already compensating for this needs to be updated in installations.

DS-1491 Improved handling of single-ended handset for IP Heavy Duty devices (IPHDT).

IP Heavy Duty devices (IPHDT) have been enhanced to automatically detect whether the connected handset uses a single-ended or differential microphone, and adjust handling accordingly to ensure optimal performance.

VSF-TURBINE 9.2.3.2

Fixed Issues

MTN-4740 Special variant: ECPIR-3P-C1 gooseneck mic was not always active

Fixed gooseneck mic handling ensuring always active audio when configured and sending audio from device.

VSF-TURBINE 9.2.3.0

Improvements

DS-1421 Web Security Improvements

Configuration updates were made to strengthen the system's overall security posture.

DS-1346 Improved speaker output on ECPIR panels

Maximal internal gain on ECPIR panels can now be set to 11 dB, opposed to 4 dB as it was before.

Fixed Issues

MTN-4731 Fix for Multicast Stream Playback Issue After Upgrade

Resolved an issue where only the first multicast stream would play after upgrading from version 8.0.3.0 to 9.1.3.4. The system now correctly handles multiple multicast streams after upgrade without requiring a factory reset.

MTN-4708 Tone test now always increases volume on failure

Tone test volume would not be increased after each of three iterations in case of failure. This is now fixed, and after each iteration, tone volume is increased.

MTN-4588 The Configured ICX-AlphaCom IP address and directory number were lost after reboot

When a device was set to ICX-AlphaCom mode using a static IP address for the first time, the configured ICX-AlphaCom IP address and directory number would be lost after a reboot and had to be re-entered.

DS-1450 New Expert Mode Audio Signal Processing Config

For detailed tuning of the AEC, ANC and AGC signal processing. If this option is set it will override the standard configuration option for these. Consult Zenitel for tools and details creating and detailed configuration bitmap.

DS-1405 Technical Preview - New Half-Duplex voice switching algorithm

We have introduced a new Half-Duplex voice switching algorithm. There is a new configuration option under the "AEC mode" named "Zenitel Half Duplex".

The goal of this new algorithm is to achieve stable and fast automatic voice switching with KIT products, especially in environments where full open duplex with adaptive AEC filters fail to work robustly.