VSF-Display Series 9.6 Release Notes

• Previous Release - VSF-Display Series 9.5 Release Notes

This document provides the release notes for VSFF8MP 9.6 with incremental bug fix releases. The release notes describe new features, improvements and issues fixed after vsff8mp-9.5.3.1.

Release info

Name: VSF-Fortitude8
Description: vsff8mp is a firmware for devices in the Zenitel Display Series.

The firmware is delivered in two different files:

• vsff8mp-9.6.3.x - Used for standard in-field upgrades
• vsff8mp-prod-9.6.3.x - Used in production- and recovery upgrades.

Version: 9.6.3.0
Date: 11.11.2026
Status: General Availability

VSFF8MP 9.6.3.0

Improvements

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.

DS-1916 Recalibrated Automatic Volume Control (AVC) Measurement on ZDD and ZSD

Recalibrated mic level SPL on ZDD-1 and ZSD-1 allowing AVC to adjust loudspeaker levels more naturally based on room noise.

Note: In version 9.5 the reported mic SPL levels were about +10 dB too high. The mic frequency responses were also tuned on these devices.

DS-1691 Enhanced Directory Search on ZDD-1 and ZMK-1

Improved the on-screen directory search algorithm with prefix-priority ranking and support for regional character substitutions (e.g., matching "Ø" and "Å"), making it faster and more intuitive to locate contacts.

DS-1822 Incoming calls are now shown on screen

Incoming calls are now displayed on the device screen.

For devices with Auto Answer disabled, users can choose whether to accept or reject an incoming call.

Fixed issues

DS-1856 Increased stability of video streaming for ZDD-1 and ZMK-1

RTSP and ONVIF video stream stability has been improved, providing more reliable video streaming under a wider range of operating conditions.

DS-1736 ZDD-1 no longer reboots on busy override

An issue has been resolved where a ZDD-1 could unexpectedly reboot when another device attempted a Busy Override call while the ZDD-1 was already engaged in an active call.

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.