Wednesday 13 January 2016

UCS 1.1.6 Maintenance Release for the CX5100 & CX5500

This version includes the features and functionality of previous versions and includes resolutions for customer-reported issues.


  • The Lync client sometimes did not recognize the CX5100 or CX5500 system as an audio/video device. When this issue occurred, the logs included AudioDspHealth: DSP not reachable errors. This issue has been resolved.
  • UseAutoUpdate was not updated after provisioning software upgrade configurations to the CX5100 and CX5500 Unified Conference Stations. This issue has been resolved.
  • The Lync client sometimes did not recognize the CX5100 or CX5500 system as an audio/video device. The system did not react to pressing the Mute/Unmute button. This issue has been resolved. 
  • After adding USB_Fix_Mask=”3” to the configuration file, users were unable to reset the reboot frequency even after removing USB_Fix_Mask=”3” from the configuration file. This issue has been resolved.
  • During boot-up on the CX5500 system, sometimes the audio and video would function normally; however, the microphone would continue flashing green and the UC software portal function and software upgrade did not work. This issue has been resolved.
  • During software upgrade to a later build, the CX5100 system would reboot 10 times, then return to the upgrade process due to problems with the CPLD versions. This issue has been resolved.


For more information, please see the Release Notes


To download the UCS 1.1.6 Maintenance Release and associated documents, please go to: