Released Date: March 25, 2019


System Stability:

  • Fixed a few issues to improve the system stability.

Configuration Wizard

  • New web GUI and embedded video in the Configuration Wizard to help new users quickly get started with the PBX.

Call Recording

  • Added a digital signature in each auto recording file and one-touch recording file.

    The digital signature ensures a recording has not been altered in any way.

  • Added support for recording calls with consent: When external users call in the PBX, they have options choose weather the calls will be recorded or not.
    Note: You can configure IVR to achieve this feature. For more details, refer to our guide.


  • Fixed Voicemail Password issue: After editing an extension, the extension's voicemail password would be changed automatically.
  • Fixed FXS extension issue: There was no sound during the call that made through an FXS extension.
  • Fixed the issue that Max Call Duration setting could not take effect.


  • Fixed SIP trunk issue: The configurations of ITSP templates were incorrect.
  • Fixed SIP Peer Trunk issue: If making outbound calls through a SIP peer trunk, the DOD number was displayed incorrectly.
  • Fixed SIP trunk issue: SIP trunk configurations would be lost after rebooting the PBX.
  • Fixed DOD issue: If DOD numbers were bound to an extension group, the DOD numbers were displayed incorrectly when making outbound calls.
  • BRI trunk: Changed incorrect setting undefined on the Advanced page to Ignore Remote Hold Indications.

Call Control

  • Fixed Inbound Route issue: The PBX could not correctly match inbound calls with DID numbers that were set on multiple inbound routes.

Call Feature

  • Optimized BLF feature of Queue: A queue agent can set a BLF key (*75{queue_number}) to achieve both Status Monitoring and Status Switching.
    Note: In the earlier version, a queue agent had to set two BLF keys. One BLF key (*75{extension_number}{queue_number}) for Status Monitoring and the other BLF key (*75{queue_number}) for Status Switching.
  • Optimized Call Parking feature: Retrieving a parked call occupies one call channel.
    Note: In the earlier version, rectrieving a parked call occupied two call channels.
  • Fixed Voicemail issue: The function of Operator Breakout from Voicemail didn't work.
  • Fixed Voicemail issue: If Voicemail to Email feature was enabled on an extension, the associated user could not receive voicemail messages on Linkus.
  • Fixed Emergency Number issue: If a PSTN trunk was being used, PBX would not disconnect the current call and send emergency calls through the PSTN trunk.
  • Fixed DISA issue: When a user dialed numbers after the secondary dial tone, the PBX used an incorrect trunk to send the call.
  • Fixed the compatibility issue with Yealink phones: The BLF key status could not change.
  • Fixed Queue issue: If password was set on a queue, the dynamic agents might not receive incoming calls.

Voice Prompt

  • Optimized Custom Prompts: The maximum file size is limited to 8 MB.


  • Fixed several CDR issues.

PBX Monitor

  • Fixed Extension Status issue: The extension status was displayed incorrectly if the extension was registered on Linkus.


  • Added API interfaces of Paging Group:
    • Query Paging Group list
    • Query a Paging Group settings
    • Add a Paging Group
    • Edit a Paging Group
    • Delete a Paging Group
  • Added API interfaces of SIP trunk:
    • Query a SIP trunk settings
    • Add a SIP trunk
    • Edit a SIP trunk
    • Delete a SIP trunk
  • Added API interfaces of Outbound Route:
    • Query an Outbound Route settings
    • Add an Outbound Route
    • Edit an Outbound Route
    • Delete an Outbound Route
  • Added API interfaces of Inbound Route:
    • Query an Inbound Route settings
    • Add an Inbound Route
    • Edit an Inbound Route
    • Delete an Inbound Route
  • Added support for perform Call Transfer during an internal call or an external call.
  • Added support for downloading CDR.
  • Fixed the API stability issue: The API would fail to work after a certain time.
  • Fixed the login API interface: Changing password didn't take effect.

Become Yeastar Registered Partner

  • At the top-right corner of the PBX web page, click Help icon to become a Yeastar Partner.


  • Added support for unauthenticated email server: If the email server doesn't need password authorization, you can leave the Password field blank.

Security Center

  • Optimized Firewall: Added a default firewall rule (lcstunnel) to accept traffic from Linkus Cloud Service.
  • Fixed Blocked IP Address issue: The Blocked IP Address page displayed a large number of records for the same IP addresses.
  • Fixed SSH login issue: The regenerated SSH password was invalid.
  • Fixed the IP Auto Defense issue: The system would not automatically delete the blocked API IP address from IP blocklist after a period of time.


  • Linkus App is pre-installed on a factory PBX.
  • Optimized Linkus Send Email feature: You can choose to send Linkus emails by Yeastar server. By doing this, you don't have to set up Email on your PBX.

    By choosing Yeastar server, you can send Linkus emails even though your PBX Email is not configured.

  • Fixed Queue Metrics Integration issue: Outbound calls that were made from QueueMetrices would not be recorded.
  • Fixed Auto Provisioning issue: If you configured the custom templates of Yealink phones, garbled characters would appear on the Custom Template page.
  • Fixed Auto Provisioning issue: Auto provision Yeastar TA1600 V3, TA2400 V3, or TA3200 V3 could not work properly.


  • Fixed the issue that Linkus QR code would appear on Me page even the Linkus was not enabled.
  • Fixed the issue that the Me web page failed to load.

Remote Management

  • Fixed the issue that Remote Management was lost from the web interface.