Yeastar Central Management 87.16.0.51
Release Date: October 20, 2025
New features
- API Request Rate Limits
-
- Added support for limiting API request rates for subordinate
users (hosting users and resellers) using the token bucket
algorithm. You can set the token bucket capacity and refill rate
for each user individually based on their client ID, allowing
granular control over users' API usage and effectively
protecting system resources from excessive or sudden API request
bursts.

For more information, see Limit API Request Rate for Subordinate Users.
- Added support for monitoring the API request traffic of
subordinate users, allowing you to intuitively view traffic
trend in a line chart and adjust rate limit settings
accordingly.

For more information, see Check API Request Traffic for Subordinate Users.
- Added the following alarms for the API request rate limits
feature (Path: ).
Alarm Description Rate Threshold Alert Triggered when the API request volume of a specific user has reached 80% of the configured rate threshold. Burst Capacity Alert Triggered when the API request volume of a specific user has reached 80% of the configured burst capacity. Rate Limit Triggered Triggered when the API request volume of a specific user has reached the configured burst request capacity.
- Added support for limiting API request rates for subordinate
users (hosting users and resellers) using the token bucket
algorithm. You can set the token bucket capacity and refill rate
for each user individually based on their client ID, allowing
granular control over users' API usage and effectively
protecting system resources from excessive or sudden API request
bursts.
- Cloud PBX API Call
- Added support for calling P-Series Cloud PBX's API endpoints via YCM
API, enabling centralized and efficient management of PBX systems.Note: The firmware of P-Series Cloud PBX should be 84.20.0.128 or later.For more information, see Call Cloud PBX GET API and Call Cloud PBX POST API.
- Task
- Added a task type Download CDR, which allows you
to set up tasks to download CDR data from specified P-Series Cloud
PBXs.Note: The firmware of P-Series Cloud PBX should be 84.20.0.128 or later.
Improvements
- Shared Trunk
- Added a configuration item Enable SIP Authentication
Cache for register trunk (Path: ). When enabled, the PBX will cache successful SIP
authentication credentials and reuse them for subsequent requests
(
INVITEandBYE) within the same session or registration cycle.Note: The setting can be applied to the P-Series Cloud PBXs with a firmware version of 84.20.0.128 or later. - Alarm
- Optimized the PBX Reported alarm:
- Renamed the alarm Yeastar SMTP Server Abnormal to Mail Server Error.
- In addition to PBX's built-in SMTP server, when a custom mail
server fails to send emails, the alarm Mail Server Error
will also be triggered and reported to Yeastar Central
Management.Note: To achieve this, the firmware of the P-Series PBX system should be 37.20.0.128/83.20.0.128/84.20.0.128 or later.
- User
- Added support for assigning the following user permissions to colleagues
or subordinate accounts:
- Download CDR Task: Allows the user to
create tasks for downloading CDR data from specified P-Series
Cloud PBXs.

- CDR Files: Allows the user to access and
manage the CDR files downloaded from P-Series Cloud
PBXs.

- Download CDR Task: Allows the user to
create tasks for downloading CDR data from specified P-Series
Cloud PBXs.
- API
-
- Optimized the API feature settings: When enabling the API
feature, the Client IP Restriction will
be automatically enabled to enhance security.Note: You can modify or disable the IP restriction during configuration as needed.

- Optimized the API interfaces for the following features.
Feature Details Cloud PBX Added Added an interface /dm/open_api/v1/cloud_pbx/instances/get, which can be used to query the information of a specific Cloud PBX using its URL.For more information, see Query a Specific Cloud PBX by URL.
Optimized Added a parameter pbxApi, which can be used to query or set the API enable status of P-Series Cloud PBX.Note: The firmware of P-Series Cloud PBX should be 84.20.0.128 or later.For more information, see the following topics:
Shared Trunk Optimized Added a parameter enbSipauthCache, which can be used to query or configure the SIP authentication cache setting of a register trunk.For more information, see the following topics:Note: The setting can be applied to the P-Series Cloud PBXs with a firmware version of 84.20.0.128 or later.
- Optimized the API feature settings: When enabling the API
feature, the Client IP Restriction will
be automatically enabled to enhance security.
- Task
- Optimized the Backup task: Added support for backing up Fax
Logs when creating backup tasks for a P-Series PBX
System.

- Repository
- Added support for accessing and managing the CDR files downloaded from
P-Series Cloud PBXs via tasks (Path: ).
For more information, see Manage CDR Files.