Turbine 9.3 - Release notes

• Previous Release - Turbine 9.2 - Release notes

This document provides the release notes for VSF-Turbine 9.3 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after VSF-Turbine 9.2.3.3.

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-9.3.x.x - Used for standard in-field upgrades
• vsft-prod-9.3.x.x - Used in production- and recovery upgrades

Version: vsft-9.3.3.0
Date: 01.10.2025
Status: General Availability

VSF-TURBINE 9.3.3.0

Improvements

MTN-4790 Enhanced Grace Period Message for Edge Systems

The grace period message has been improved to provide clearer information. Users will now find it easier to understand when their system is in a grace period and if actions are required.

MTN-4701 Duplicate Hardware Version information

Duplicate Hardware Version information in station web has been removed. Hardware Version information can be found in Hardware Revision.

DS-1560 Edge Controller: Batch Upgrade Feature removed

The Edge Controller batch upgrade feature has been removed. Batch upgrades should now be performed using IMT, which provides greater flexibility and efficiency. Devices can still be updated individually via the web interface.

DS-1513 Enabled text rotation on OLED displays for TCIS-4/5 and TCIV-5+ devices

Text shown on OLED displays can now be rotated (0°, 90° and 270° increments) for TCIS-4/5 and TCIV-5+ devices

Fixed Issues

MTN-4796 ONVIF Subscribe Enhancements

Subscription requests now accept any namespace in the Address field.

The “wsnt:Filter” element is now optional. If omitted, the subscription will include all topics by default.

MTN-4795 Security Updates

Resolved potential issues in web components and strengthened system defenses to improve overall platform security and resilience.

MTN-4742 ONVIF Improvement: Default Video Source Configuration

GetVideoSourceConfigurationOptions now returns a default video source configuration even when no configuration is specified.

MTN-4721 The tone used by Tone Test is no longer mixed with Line-In signal in ICX-AlphaCom mode

Prior to version 7.1, tone during the tone test was mixed with line-in signal if source was Line-In idle. Between versions 7. and 9.2, there was no tone at all if source was Line-In idle. This is now fixed. Line-in audio will now be muted during the tone test.

MTN-4688 Fixed issues with ONVIF backchannel RTSP failures on missing media

Now always creating full media pipeline for backchannel to ensure better compatibility.

MTN-4681 Ringing tone in ICX/AlphaCom now depends on setting in AlphaPro

Ringing tone level in ICX/Alphacom mode was low and did not respond to the Ringing Volume setting configured in AlphaPro. This is now fixed, ringing tone level is higher and dependent on value set in AlphaPro.

MTN-4660 Turbine Devices (TCIS, TFIE+) risk of power shutdown

Some Turbine devices could exceed the PoE Class 3 power limit (13.0W) at high gain settings or with certain audio signals, potentially causing unexpected shutdowns or reboots. A 100Hz high-pass filter is now implemented to block low-frequency energy that can cause excessive power draw. The maximum available gain configuration is also reduced to ensure devices stay within PoE Class 3 limits.

MTN-4566 Removed Partial Reboot Option

The Partial Reboot option has been removed from the device web recovery page.

MTN-4474 Multicast paging no longer gets interrupted or stopped on unrelated config changes

Audio will no longer be interrupted or stopped when unrelated configuration change, such as adjusting the volume, are made.

MTN-4386 Added support for "Disable Recovery OS" quick action in IMT.

This allows disabling Recovery OS directly from IMT, enabling bulk firmware upgrades on Turbine Compact devices (later revisions) connected via NVT 2-wire switch.

MTN-4203 IP loudspeakers are now behaving correctly in simplex mode for all codecs

If codec was g.711u, IP speaker would disregard selected PTT mode and use Full duplex. This is now fixed.

MTN-4155 Edge Group Call: Support for Symbols and National Characters

Group call names that include symbols or national (non-ASCII) characters no longer cause calls to fail. While characters outside the Latin-1 character set may still not render correctly on display devices, the group call now connects and proceeds successfully, consistent with the behavior already supported for SIP name.

DS-1572 Audio Setup Real-Time challenges

Observed on Connect case call to queue four duplicated SDP in short time interval causing up two 4 start and stop on one setup. This optimization deprecates memory intensive AEC context save and restore by keeping state in code-object between calls. Also added state handling on new Audio Session separating network audio and audio engine initialize in different steps.

DS-1571 Duplicated SDPs from SIP-Invite/Re-Invite causes multiple audio start/stop with possible side effects

Observed on Connect case call to queue four duplicated SDP in short time interval causing up two 4 start and stop on one setup. This optimization check for duplicated SDPs in Re-Invites and do nothing if repeated with same parameters.

DS-1527 Zenitel Connect – Increased Virtual DAK Entry Limit

Fixed an issue where Virtual DAKs were limited to a maximum of 9 entries. Attempting to configure more than 9 entries caused configuration scrambling and an effective cap at 10 entries. The limit has now been lifted to support a larger number of entries reliably.

DS-1502 Multicast paging could stop working under some rare conditions

Multicast paging would stop working under some rare conditions, this is now fixed.

Security Updates

MTN-4795 Fixed multiple vulnerabilities

• Fixed multiple vulnerabilities registered under CVE-2025-64126, CVE-2025-64127, CVE-2025-64128, CVE-2025-64129, and CVE-2025-64130.

These vulnerabilities were associated with legacy web interface components. The affected functionality has been removed or redesigned to prevent misuse.

• Action: Upgrade to version 9.3.3.0 (8.2.3.4 for TCIV legacy hardware) or later to ensure the latest security enhancements are applied.