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| * Previous Release - [[Turbine 9.3 - Release notes]]
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| This document provides the release notes for VSF-Turbine 9.4 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after VSF-Turbine 9.3.3.1.
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| VSF-Turbine ('''vsft''') is a firmware for [[Zenitel Devices based on iMX28|Zenitel devices based on the IMX28 processor]].
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| ==Release info==
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| '''Name:''' VSF-Turbine <br>
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| '''Description:''' VSF-Turbine is a firmware for [[Zenitel Devices based on iMX28|Zenitel devices based on the IMX28 processor]].
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| The firmware is delivered in two different ZIP archives and one swu file:<br>
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| *vsft-9.4.x.x - Used for standard in-field upgrades
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| *vsft-prod-9.4.x.x - Used in production- and recovery upgrades
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| '''Version:''' vsft-9.4.3.0<br>
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| '''Date:''' 30.01.2026 <br>
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| '''Status:''' General Availability
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| =VSF-TURBINE 9.4.3.0=
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| == Improvements==
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| === DS-1634 TCIS-x: Changed the Acoustic Echo Cancellation (AEC) and Active Noise Cancellation (ANC) factory defaults settings to “Low”===
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| This is to get the best out-of-the-box audio quality experience when installing in low to moderate noisy environments.
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| When installing in more challenging environments using high volume settings, some tuning might be needed by setting AEC and/or ANC to “Moderate” or “High”.
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| === DS-1601 Added support for the TA-10 Relay module in Zenitel Connect Pro===
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| Added support for the TA-10 relay module, the relay module is now configurable in Zenitel Connect Pro.
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| === DS-1580 Added support for the ECPIR-3P-B call panel.===
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| === DS-1516 Relays/outputs can now be triggered by multicast paging streams===
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| The activation is following the audio stream priorities in the multicast paging.
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| === DS-1259 In the Hostname field the maximum number of characters is increased to 64===
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| === DS-769 STUN support for intercom devices===
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| Basic STUN support is added for intercom for peer to peer RTP media between two intercoms that communicate over public PBX.
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| When STUN is configured to communicate on local network hairpin rules are required on router.
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| <br>
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| ==Fixed Issues==
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| === MTN-4879 Audio quality tuning===
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| *Increased microphone gain (up +6 dB) to improve voice quality and voice switching, and reduce impact from the Active Noise Cancellation (ANC) algorithm
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| *Tuned the Acoustic Echo Cancellation (AEC) and the Active Noise Cancellation (ANC) algorithms with more focus on clean Near-End Voice Quality and improved voice switching and double-talk.
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| **AEC Profiles "low" and "medium" focus on Near-End signal quality at lower volume settings
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| **AEC Profiles "high" and "half-duplex" focus on removing echo return on higher volume settings and when mechanical distortions are high. Use this only when having issues with echo return.
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| *The ANC level profiles has been slightly modified with more focus on cleaner near-end voice and somewhat less noise suppression.
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| *Created new microphone and loudspeaker EQ filters, resulting in a more flat frequency response and a reduction of some loudspeaker resonances. This allows for less Acoustic Echo Cancellation (AEC) filtering resulting in improved mic voice signal, and at the same a more pleasant sound quality from the loudspeaker.
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| === MTN-4834 The Active Noise Cancellation (ANC) level “Low” did take effect after start-up===
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| The ANC Level "low" will now be applied after start-up of the device, not only after changing to "low" during operation.
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| This bug affected the “low” configuration level only.
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| === MTN-4820 The Volume settings in the web interface accepted input values outside the defined maximum/minimum range.===
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| Volume settings now only accepts input values within the defined maximum/minimum range.
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| === MTN-4478 Fixed an issue where reboot was required after disabling DAVC Algorithm===
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| Now modifying the “Enable AVC Algorithm” change will apply on-the-fly both on enable and disable. This will simplify experimenting with running the AVC algorithm on AVC source or AVC player side.
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| The general recommendation is running AVC Algorithm on the player/receiver side. This ensure the AVC lock to work without sending audio also to AVC source(s).
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| === DS-1600 Fixed an issue where OLED display text kept scrolling even when scrolling timer was set to 0 on TCIS-4/5 and TCIV-5+===
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| This has been corrected so that the text no longer starts scrolling when the scrolling timer is set to 0.
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| DS-1574 Fixed an issue where the device became non-functional after enabling and then disabling the "Detailed Logging".
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| === DS-1568 Fixed an issue where second Permanent Audio Stream (PAS) would not start===
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| The PAS stream 2 under special config page zForm_stream_config should now stream as expected.
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| <br>
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| [[Category: Release notes]]
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