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| * Previous Release - [[VSF-Fortitude8 9.3 Release Notes]]
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| This document provides the release notes for VSF-Fortitude8 9.3 with incremental bug fix releases. The release notes for VSF-Fortitude8 9.4 describe new features, improvements and issues fixed after VSF-Fortitude8 9.3.3.1.
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| ==Release info==
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| '''Name:''' VSF-Fortitude8 <br>
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| '''Description:''' VSF-Fortitude8 is a firmware for [[Zenitel Devices based on iMX8|Zenitel devices based on the IMX8 processor]].
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| The firmware is delivered in two different files:
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| *vsff8-9.4.3.x - Used for standard in-field upgrades
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| *vsff8-prod-9.4.3.x - Used in production- and recovery upgrades.
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| '''Version:''' 9.4.3.0<br>
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| '''Date:''' 30.01.2026 <br>
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| '''Status:''' General Availability<br>
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| =VSF-FORTITUDE8 9.4.3.0=
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| ==Improvements==
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| === DS-1638 The default Acoustic Echo Cancellation (AEC) profile is tuned for better double-talk and voice quality.===
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| The default AEC filter configuration is set to do less processing of the audio signal for best voice switching, double-talk and voice quality.
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| When installed in challenging environments using high volume settings, the AEC level might have to be set to Moderate or High to remove echo return.
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| === DS-1585 Far-End Signal Squelch configuration changes needed reboot to apply===
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| Now Squelch parameters are applied on the-fly when saving changes.
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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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| ==Issues fixed==
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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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| === DS-1633 TCIV+ and TCIS+: New equalizer (EQ) filters for improved audio quality===
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| Created new microphone and loudspeaker EQ filters for all TCIV+ variants, 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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| === 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-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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| ==Known Issues==
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| === MTN-4333 HD-Audio mode not working using digital microphone input ===
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| Audio is distorted when digital microphone is used. Audio is OK if using analogue microphone input
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| <br>
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| [[Category: Release notes]]
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