VSF-Fortitude6 10.0 Release Notes
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This document provides the release notes for VSF-Fortitude6 10.0 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after VSF-Fortitude6 9.4.3.1.
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Release info
Name: VSF-Fortitude6
Description: VSF-Fortitude6 is a firmware for Zenitel devices based on the IMX6 processor.
The firmware is delivered in two different files:
- vsff6-10.0.3.x - Used for standard in-field upgrades
- vsff6-prod-10.0.3.x - Used in production- and recovery upgrades.
Version: 10.0.3.2
Date: 10.07.2026
Status: General Availability
Compatibility: Version 10.0.x.x is compatible with the Zenitel Connect Pro platform only.
VSF-FORTITUDE6 10.0.3.2
Improvements
DS-1744 CRM-V-2 Improved audio frequency response on Mic and Loudspeaker signals
Audio tuning updates have been introduced on the CRM-V2 to improve speech intelligibility, reduce distortion, and enhance audio switching performance. These improvements deliver a clearer, more natural voice experience in both half-duplex and open-duplex communication.
To maximize output levels where higher SPL is desired, the DRC (Dynamic Range Compression) feature can be enabled to boost perceived loudness while maintaining the improved audio clarity.
DS-1743 IPDM-V2 Improved audio frequency response on Mic and Loudspeaker signals
Audio tuning updates have been introduced on the IPDM-V2 to improve speech intelligibility, reduce distortion, and enhance audio switching performance. These improvements deliver a clearer, more natural voice experience in both half-duplex and open-duplex communication.
As a result of the optimized frequency response, maximum measured sound pressure levels may be slightly lower in some configurations compared to previous software versions.
To maximize output levels where higher SPL is desired, the DRC (Dynamic Range Compression) feature can be enabled to boost perceived loudness while maintaining the improved audio clarity.
Fixed Issues
DS-1728 Fixed voice quality issue during duplex communication on IPDM-V2 and CRM-V2
Resolved an issue where voice quality could degrade during duplex (two-way) communication on IPDM-V2 and CRM-V2 stations, particularly at higher volume levels.
Optimized audio filters for loudspeaker and microphone now significantly reduce distortion, delivering clearer and more intelligible voice communication. As part of this fix, the default maximum voice volume has been adjusted to ensure distortion-free audio. To achieve the same or higher perceived loudness with improved clarity, enable the DRC (Dynamic Range Compression) option in the station configuration
Security Updates
DS-1720 Disabled SNMP port by default in firewall
The SNMP port is now disabled by default in the firewall on all new and factory-reset devices. Customers who require SNMP must enable it manually in the device configuration before use.
DS-1683 Security Update
Resolved vulnerabilities related to
- CVE-2025-15467 Stack buffer overflow
Action: Upgrade to 9.5.3.0 or later
DS-321 New Secure Web Stack Support for Zenitel Connect Systems
Support added for new modern and security-hardened web interface to improve cybersecurity compliance. The new interface is served over HTTPS by default.
Important Downgrade Notice: When downgrading from the version 10.x.x.x (or newer) to version 9.x.x.x (or older), the HTTP port must be open prior to downgrade. After downgrading, manually refresh the browser to access the old web interface via HTTP. If the HTTP port was not opened beforehand, a physical factory reset is required to restore device functionality.