Yeastar P-Series Appliance Edition 37.22.0.139 V23.3

Release date:April 21, 2026

Release version:V23.3-GA

Base version:37.22.0.138


This topic introduces the essential bug fix included in the firmware 37.22.0.139.

  • To try out the new updates, check for firmware updates from PBX admin portal or download the firmware from Yeastar Official Website , and upgrade your phone system.
  • For details on the new features and improvements in Linkus UC Clients and 'Yeastar Linkus for Google' Chrome extension, see Linkus Release Notes.
  • If you found something that doesn't work as expected, you can submit feedback directly from here.

Bug fix

Network
Fixed the remote registration issue: When the system's NAT mode is set to No (Path: System > Network > Public IP and Ports > NAT Mode), all IP phones registered via FQDN lost connection.
Call Report
Fixed the call report issue: When querying Agent Login Activity, Agent Pause Activity, or Agent Missed Call Activity report, the report data after upgrading the PBX to version 37.22.0.138 was not found.
Note: Firmware 37.22.0.138 introduces new features, enhancements, and bug fixes to improve system performance and user experience. For more information, see Yeastar P-Series Appliance Edition 37.22.0.138.