The mentioned Change Log reflects all the major changes. Some updates, additions and fixes may not be listed. 3CX is constantly improving the product and may implement fixes prior to any official release.

3CX Session Border Controller, Build 20.0.100 FINAL, August 2024

Linux, Raspberry Pi & Windows

  • Maintenance and adds new 3CX repo for Linux & Raspberry.
  • Fixed no audio on caller side when SRTP is set to Enabled and phone is behind SBC.
  • Fixed memory leaks under bulk of calls.
  • Fixed HA Cluster causing issues on Debian 12 bookworm.

3CX Session Border Controller, Build 18.1.36 FINAL, February 2022

Linux, Raspberry Pi & Windows

  • Fixed issue with wrongly discarded RTP frames in case of incoming delay.
  • Improved log reporting.

3CX Session Border Controller, Build 18.1.34 BETA, December 2021

Linux, Raspberry Pi & Windows

  • Fixed issue with Raspberry Pi on reconnection after losing network.
  • Improved disconnect report on logs.

3CX Session Border Controller, Build 18.1.32 BETA, November 2021

Linux, Raspberry Pi & Windows

  • Fixed issue with one-way audio after re-invite that relates to srtp.
  • Fixed issue with ACK not being seen in tunnel, when picking up a call from Shared Parking due to retransmissions.
  • Fixed issue with no inbound audio in a scenario that SBC phone sends outbound RTP stream from odd ports with no RTCP.
  • Fixed issue with one-way audio in a scenario of attended transfer from Snom to Gigaset N870 behind SBC.
  • Fix issue with loopback for RTCP.

3CX Session Border Controller, Build 18.0.30 FINAL, September 2021

Linux, Raspberry Pi & Windows

  • Fixed issue with fax being terminated when ATA is provisioned behind SBC.

3CX Session Border Controller, Build 18.0.27 Final, August 2021

Linux, Raspberry Pi & Windows

  • Fixed issue with audio in Barge calls.
  • Improved loop partner reset.
  • Fixed issue with RTP odd/even loop.
  • Fixed restart on DNS list change.
  • Fixed handle closed socket due to write error.
  • Fixed issue with Bash code Linux installer.
  • Fixed audio problems on call reconnection in case of external calls.

3CX Session Border Controller, Build 16.2.24 Final, November 2020

Linux, Raspberry Pi & Windows

  • Updated to the latest TLS suite for SBC.

3CX Session Border Controller, Build 16.1.152 BETA, May 2020

Linux, Raspberry Pi & Windows

  • Added improvements to SBC High Availability (HA) Cluster for Debian / Raspbian Linux:
  • Display default system timezone setting on “Prerequisites” screen.
  • Option to specify the resources to ping on initial configuration on primary node.
  • Cleaner uninstall by removing package dependencies.
  • Fixed a race condition when SBC crashes on push config due to SSL.
  • Improved handling of lost RTP packets when big jumps in SEQ.
  • Fixed binding to SIP multicast socket, now always binding to 0.0.0.0 .
  • Removed RTP socket “10054” errors from logs.
  • Fixed issue with tunnel socket binding to the network interface selected on startup.
  • Fixed RTP session storage causing no audio in case of attendant transfers.

3CX Session Border Controller, Build 16.1.86 BETA, February 2020

Linux & Raspberry Pi

  • Added support for SBC High Availability (HA) Cluster.
  • Fixed socket logging.
  • Fixed RTP session storage causing no audio in case of attendant transfers.

3CX Session Border Controller, Build 16.0.390 Final, October 2019

Linux, Raspberry Pi & Windows

  • Fixed issue with 3CX SBC updates from “3cxpbx-testing” repo.

3CX Session Border Controller, Build 16.0.389 Beta, September 2019

Linux, Raspberry Pi & Windows

  • Fixed issue with loopbacks selecting wrong interface.
  • Added RTP Loss packet statistics.

3CX Session Border Controller, Build 16.0.386, July 2019

Linux, Raspberry Pi & Windows

  • Fixed crash caused in DNS Resolver when target end-point takes a lot of time to resolve.

3CX Session Border Controller, Build 16.0.384, June 2019

Linux, Raspberry Pi & Windows

  • Fixed stuck call behind SBC caused by incorrect SDP checks.
  • Fixed stuck calls behind SBC caused by creation of local call leg created when SBC disconnects.
  • Fixed hold/resume causing one-way audio behind SBC.
  • Fixed incorrect SDP negotiation for video calls and also address packet loss.
  • Fixed crash caused in DNS Resolver when target end-point does not resolve.
  • Fixed crash in Linux due to TLS connectivity.