Release Notes for SBC and SBC Proxy Server

SBC Server and SBC Proxy Server use the same firmware. This topic gives an overview of the release history of SBC Server and SBC Proxy Server.

Version 86.17.0.16

Release data: November 17, 2025

  • Support the features of Yeastar Central Management version 87.17.0.22.
  • Added support for reporting SIP traffic of P-Series Cloud PBXs to an integrated Homer server, enabling real-time monitoring of PBX communication data.
  • Added support for forwarding SIP 302 Moved Temporarily responses to external callers through the SBC server, ensuring proper call redirection.
  • Fixed the call issue: Calls between a 2N door phone (registered as a PBX extension) and an IP phones that does not support video would fail.

Version 86.16.0.27

Release date: October 20, 2025

Support the features of Yeastar Central Management version 87.16.0.51.

Version 86.16.0.12

Release date: September 15, 2025

Support the features of Yeastar Central Management version 87.16.0.19.

Version 86.15.0.105

Release date: August 4, 2025

  • Added support for High Availability (HA) for SBC Proxy servers deployed in on-premises (non-cloud) environments.
    Note: For deployment details, please contact Yeastar support.
  • Added support for SIP Trunk SRV failover in SBC Proxy servers.

Version 86.15.0.70

Release date: July 14, 2025

  • Support the features of Yeastar Central Management version 87.15.0.83.
  • Added compatibility with Yeastar dedicated Load Balancer (LB) to achieve High Availability for SBC server.
    The Yeastar Load Balancer distributes network traffic across multiple SBC servers, preventing overload on a single server and ensuring uninterrupted service even in event of a failure.
    Note: To deploy the Yeastar Load Balancer, ensure your environment meets the Yeastar Load Balancer System Requirements and contact Yeastar Support for assistance with deployment.

Version 86.15.0.42

Release date: June 9, 2025

Support the features of Yeastar Central Management version 87.15.0.24.

Version 86.15.0.14

Release date: May 6, 2025

  • Added TCP keep-alive support for TLS trunks to maintain long-term connection stability and prevent call issues caused by unexpected disconnections.
  • Fixed the call issue:
    • Failed to receive inbound calls through a register trunk.
    • When IP phones were connected to the network via VPN and registered with extensions, there would be one-way audio issues during internal calls on the IP phones.
  • Fixed the trunk issue: Trunks on the PBXs were disconnected unexpectedly due to malformed responses from the carrier.
  • Fixed the BLF key issue: When an extension was registered on Yealink IP phone and a BLF key was configured to monitor a specific parking number, the BLF LED did not change colors correctly based on the call parking status.

Version 86.14.0.12

Release date: April 7, 2025

Support the features of Yeastar Central Management version 87.14.0.31.

Version 86.13.0.27

Release date: January 13, 2025

Support the features of Yeastar Central Management version 87.13.0.62.

Version 86.13.0.7

Release date: December 16, 2024

Support the features of Yeastar Central Management version 87.13.0.18.

Version 86.12.0.41

Release date: November 21, 2024

Support the features of Yeastar Central Management version 87.12.0.71.

Version 86.12.0.5

Release date: August 19, 2024

Support the features of Yeastar Central Management version 87.12.0.19.

Version 86.11.0.89

Release date: July 9, 2024
  • Fixed the connection issue: When the connections between IP phones and SBC server were dropped due to a server crash, the system attempted to re-establish connections before recovery, leading to unnecessary resource consumption.
  • Fixed the AMI issue: The connection was denied when attempting to access the system through AMI, despite the IP address being trusted.

Version 86.11.0.35

Release date: May 7, 2024

  • Support the features of Yeastar Central Management version 87.11.0.21.
  • Fixed the PBX call issue: Failed to flip a call from Linkus Web Client to Mobile Client.

Version 86.10.0.33

Release date: January 29, 2024

Support the features of Yeastar Central Management version 87.10.0.28.

Version 86.8.0.13

Release date: December 11, 2023

Support the features of Yeastar Central Management version 87.8.0.9.

Version 86.6.0.52

Release date: August 30, 2023
  • Support the features of Yeastar Central Management version 87.6.0.16.
  • Fixed the call issue on Linkus Mobile Client: When the network connection switched between WiFi and cellular data on user's mobile phone during a Linkus call, there was no audio in the call, and the call could not be disconnected automatically on the callee's side after the caller hung up.
  • Fixed the video intercom call issue: When a user answered the call sent from a door station's extension via an IP video phone, there was no video displayed.
  • Fixed the interconnection issue with an on-premises PBX:
    • The Cloud PBX provided an account trunk with TLS transport to connect with an on-premises PBX, the call through this trunk could not be disconnected.
    • The Cloud PBX provided an account trunk to connect with an on-premises PBX, there is no audio in the calls through this trunk.
  • Fixed the outbound call issues: An outbound call could not be disconnected automatically on the callee's side after the caller hung up.

Version 86.5.0.13

Release date: June 26, 2023

  • Cooperate with Yeastar Central Management version 87.4.0.28 to address the Apache RocketMQ vulnerability issue.
  • Fixed the memory leak issue.

Version 86.5.0.10

Release date: April 17, 2023

  • Support the features of Yeastar Central Management version 87.4.0.23.
  • Fixed the call issue: There is no audio for the calls on Linkus Web Client.

Version 86.4.0.87

Release date: January 4, 2023

Support the features of Yeastar Central Management version 87.3.0.95.

Version 86.4.0.45

Release date: October 24, 2022

Support the features of Yeastar Central Management version 87.3.0.73.

Version 86.3.0.47

Release date: July 21, 2022

Fixed the call issues:
  • There was no sound in a call as the SRTP negotiation failed.
  • An ongoing call made through a SIP trunk was disconnected automatically as the SBC Proxy Server didn't forward Re-INVITE messages to the PBX.

Version 86.3.0.16

Release date: June 13, 2022

  • Fixed the IVR issue: There was no sound when a caller called into the IVR.

Version 86.3.0.14

Release date: May 30, 2022

Fixed the SIP trunk issues:
  • A user created a SIP trunk with associated DID number on a P-Series Cloud PBX, the SIP trunk registration failed occasionally.
  • A user used the same trunk account to create SIP register trunks on multiple P-Series Cloud PBXs, and associated with different DID numbers respectively, but when a caller dialed a specific DID number, the inbound call was sent to a wrong PBX.

Version 86.3.0.7

Release date: April 18, 2022

Improved the server performance.

Version 86.2.0.8

Release date: February 28, 2022

Support the features of Yeastar Central Management version 87.2.0.15.

Version 86.1.0.13

Release date: December 30, 2021
  • Fixed the issue that SIP trunk registration kept failed.
  • Fixed the extension issue: The extension connection became unstable after upgrading the Cloud PBX firmware.

Version 86.1.0.12

First release.

For instructions on Yeastar Central Management, see Yeastar Central Management Administrator Guide.