Yeastar P-Series Appliance Edition 37.20.0.22

This update fixes issues recently discovered in version 37.20.0.21.

Release date:August 11, 2025

Release type:Out-of-Cycle (OOC) update

Bug fix

Emergency Number: Fixed the emergency number issue: If multiple outbound rules with different prepend values were configured for an emergency number, the system only applied the prepend value from the last rule.

Note: Firmware 37.20.0.21 introduces new features, enhancements, and bug fixes to improve system performance and user experience. For more information, see Yeastar P-Series Appliance Edition 37.20.0.21.