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VSF-Fortitude6 9.6 Release Notes

From Zenitel Wiki

This document provides the release notes for VSF-Fortitude6 9.6 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after VSF-Fortitude6 9.5.3.1.

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:

  • vsff6-9.6.3.x - Used for standard in-field upgrades
  • vsff6-prod-9.6.3.x - Used in production- and recovery upgrades.

Version: 9.6.3.0
Date: 11.11.2026
Status: General Availability


VSF-FORTITUDE6 9.6.3.0

Improvements

DS-1871 Acoustic Tuning & Echo Suppression Improvements

Updated acoustic filter profiles for IPCROR-V2 stations to minimize resonance, suppress echo artifacts, and deliver clearer speech intelligibility during open-duplex calls.

DS-1993 DNS SRV Support and Transport Selection for SIP

Manual DNS SRV record configuration (sip_srv_record_name) has been removed in favor of standard DNS SRV/NAPTR discovery using the configured Server Domain. When the outbound transport is set to ANY, proxy port is automatically resolved (set to 0 / Auto).

  • Action required: Users upgrading stations with custom manual SRV records must configure the target domain in the standard Server Domain.

DS-1253 Support for Cisco Webex integration has been added

Zenitel devices running in SIP mode can now register and operate with Cisco Webex Calling. Leveraging RFC-3263 DNS SRV discovery and TLS/SRTP encryption, stations can participate in calls with Webex soft clients, external PSTN lines, and other registered intercoms.

Fixed Issues

DS-1905 Multitone tone test robustness adjustments

Adjusted thresholds for tone FFT bin magnitude feedback from speaker to mic to reduce false negatives in moderate to high noise.

DS-1901 Security Update

Resolved vulnerabilities related to: CVE-2026-95377 OS command injection via DHCP provisioning.

  • Action: Upgrade to 9.6.3.0 or later for SIP, IC-Edge and ICX-Alphacom, and 10.1.3.0 or later for Zenitel Connect.



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