VXs Release Notes

This document contains the release notes for VXs

VXs 1.4.19

New features

Fixes and improvements

Fixed an intermittent issue that could make it hard for callers to hear the host when many calls are active at the same time
Improved stability of phone streams

Upgrade note

Upgrading to this version requires manual updates to the docker-compose and configuration files. Refer to the upgrade instructions before upgrading.
Requires active Telos Care Subscription of July 23rd 2026 or later

New features

The container can run as a non-root user
AEC can be enabled or disabled through the REST API without resubmitting the full AEC configuration
Added AEC diagnostics

Fixes and improvements

Updated the base image with the latest security updates, including OpenSSL
Clock rate and skew are reported correctly for Opus calls
Improved LWRP handling for AES67 multi-channel inputs, including better selection between Livewire channel number and IP address
AEC uses the correct network interface on systems with multiple NICs

New features

AES67 inputs with 1 to 8 channels, including channel selection
SMPTE ST 2022-7 redundancy, including separate addresses for each path
Opus codec support (experimental, off by default)
Per-line outbound proxy option
LWCP connections accepted on all network interfaces
CLOCK_TAI reference clock (used by default for new installs)
Can run in a container limited to specific CPUs (cpuset)
Environment variables to change the default web UI and call_control HTTP/HTTPS ports
Configuration option to relax scheduling latency requirements
Faster synchronization across CPU cores

Fixes and improvements

Fixed a startup issue when the host is configured with IPv6 DNS servers
Fixed missing audio when the codec is switched mid-call
Fixed AES67 packet timestamps
Fixed buffer overruns that repeated continuously after the first one
Improved buffering for AEC inputs and for input streams with short packets
Fixed the RTP payload type, sequence numbers, and timestamps of DTMF packets
Improved stability of the DSP engine
Fixed on-premises Key9 licensing
Licensed feature counts stay correct when the license server is slow to respond
SMPTE ST 2022-7:
- Streams keep sending if one redundant interface goes down
- Livewire advertises all addresses for 2022-7 streams
- Stream output addresses must be unique
- Extra stream addresses are ignored on systems with a single interface
Fixed the web UI for call processing settings
Fixed the XML API and configuration backup/restore, including XML import in the web UI and AoIP interface settings
Receive buffer sizes take scheduling latency into account
Fixed clock jumps after processing overruns
Removed redundant log messages when the clock resynchronizes
Improved Opus call stability
Updated the base image with the latest security updates