[Software]TRIO UC Software 5.4.2 Rev AB has been released

Polycom Employee & Community Manager

[Software]TRIO UC Software 5.4.2 Rev AB has been released

Hello all,


We are pleased to announce that the Polycom® UC Software Rev AB associated utilities and documents for Polycom® RealPresence Trio™ 8800 only are now available on the Polycom Product Support web pages (http://support.polycom.com) for download.


This software replaces the prior released 5.4.2 Rev AA due the following issue:


  • RealPresence Trio 8800 systems using Polycom UC Software 5.4.2AA enter a reboot loop when connected to Cisco switches that support IEEE 802.3af power over Ethernet (PoE) and have Cisco Discovery Protocol (CDP) enabled and Link Layer Discovery Protocol (LLDP) disabled. This issue does not exist with any other UC Software version or switches other than Cisco. 


UC Software Rev AB is a maintenance release with important field fixes for RealPresence Trio only.


Polycom UC Software Rev AB supports the following platforms:


  • Polycom RealPresence Trio 8800 including the Polycom RealPresence Trio Visual+ accessory


What is available now on web?

  • UC Software 5.4.2 RevAB image
  • UC Software 5.4.2 RevAB CAB file
  • Release Notes for 5.4.2[PDF]
  • Administrator Guide for 5.4.2 RevAB [PDF]
  • Deployment Guide for Microsoft Skype for Business Environments for 5.4.2 RevAB [PDF]
  • Deployment of Polycom RealPresence Trio Solution, SoundStation IP and SoundStation Duo Conference Phones with CUCM [PDF]
  • Regulatory Notices [PDF]


How to download UCS 5.4.2 Rev AB software, release notes & documents:



You can obtain the software and the related documentation from the RealPresence Trio support pages => here <=


What Is Included In This Release:


  • Forward Error Correction (FEC)
  • Customize the Real Presence Trio 8800 System Interface
  • Configure Number Formatting
  • Multiparty Desktop Sharing with Skype for Business
  • Share Desktop at 1080p Resolution with Polycom® People + Content™ IP
  • Microsoft Compatibility
  • Skype for Business Support
  • Configuration Enhancements => here <= or => here <= or => here <= or => here <=

If official support is required please check how to phone or open a case here

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