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[Software] RealPresence Trio UC Software 5.4.5 Rev AC

Polycom Employee & Community Manager

[Software] RealPresence Trio UC Software 5.4.5 Rev AC

I am happy to announce the availability of Polycom® UC Software 5.4.5 Rev AC, with associated utilities and documents on the RealPresence Trio product support web page for download.


UCS 5.4.5AC ( is a maintenance release for RealPresence Trio 8800 and the RealPresence Trio Visual+ accessory addressing important field fixes including:


  • Improved Connectivity with some 1,000 Mbps (gigabit) Ethernet switches
  • Responsiveness when in large Skype for Business meetings with 100+ participants
  • Web Configuration Utility: corrected display of ‘special interop’ parameter Lync2010 and EWS Internal/External URLs
  • Audio is now heard when using Opus codec at 13.33 Kbps

For more detailed information, see the Release Notes for UCS 5.4.5 Rev AC.


What is available now on web?


  • UC Software 5.4.5 Rev AC software image and CAB files
  • Release Notes for 5.4.5 Rev AC [PDF]


Release History


Release Date



May 2017

This release addresses the following issues:

•       Large Skype for Business Meetings with 100+ participants

•       Connectivity with Gigabit Ethernet switches

•       Microsoft Exchange Online authentication failure

The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's