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Hello all,


We are pleased to announce the latest release UC AC for the Polycom Trio 8800 and introducing the new Polycom Trio 8500.


2200-66700-025 Trio 8500 IP conf phone
2200-66700-019  Trio 8500 SfB/O365/Lync edition 


For more details visit => here <=


What’s New for UC Software 5.5.2AC


This section lists resolved issues for Polycom® Unified Communications (UC) Software 5.5.2AC for the Polycom® Trio™ solution in Open SIP and Skype for Business deployments.


Note that support for the features listed may vary depending on the Polycom Trio device you are using. Device-specific support is indicated for each feature.


Polycom UC Software 5.5.2AC supports the following Polycom products:


  • Polycom Trio 8500 system
  • Polycom Trio 8800 system
  • Polycom Trio Visual+ accessory


Screen Mirroring on RealPresence Trio Solution


The Polycom Trio 8800 system provides screen mirroring so that you can share content from Apple® AirPlay® and Miracast®-certified devices.


Please be aware that Apple® AirPlay® or Miracast® requires a Polycom license SKU 5150-84981-001


Local Display of Apple® AirPlay® certified devices via Screen Mirroring


  • Devices Supported: Apple iPhone, iPad, MacBook
  • Trio and AirPlay device need to be on the same subnet or if on different subnets, they need to be routable with multicast DNS (Bonjour) bridged between the two subnets for discovery
  • Network Ports/Broadcasts:
  • Bonjour discovery:          UDP port 5353
  • Airplay Session: TCP ports 7000, 7100, 8009, 47000, UDP port 1900
  • Only “Screen Mirroring” mode from is supported. Certain iOS apps use “Video Mirroring” mode – this is not supported (example. iOS YouTube app). Utilize Safari instead
  • Local content presentation only (content will not be transmitted to the far end when in a point to point call or conference)
  • The maximum resolutions and frame rates supported are 720@60fps or 1080@30fps.


Apple® AirPlay® or Miracast® is disabled by default and can be enabled using:


  • content.airplayServer.enabled="1"
  • content.wirelessDisplay.sink.enabled="1"

Display System Name for Wireless Content Connections


When the RealPresence Trio system is registered with Skype for Business, you can determine if the Skype for Business display name shows in the list of available devices that supported Apple, Windows, or Android devices can connect with to share content using AirPlay or Miracast. 


The Airplay or Miracast devices search for a system name, which you can specify in one or more of the following parameters. The device displays the name you configure for the system in the following priority in order: 


  • content.airplayServer.name for AirPlay 
  • content.wirelessDisplay.name for Wireless Display
  • system.name
  • displayname (on the Skype for Business server)


Audible Confirmation of Mute State Changes (CVAA)


The RealPresence Trio added a new feature to enable visually impaired users to receive an audible notification of the mute state. You will now receive an alert tone when the mute status of the phone is changed from mute to un-mute or vice versa using any of the mute buttons of the device or from far-end system. The phone also plays an alert tone periodically when the phone is in mute state. You can configure this feature using the following parameters:


  • se.touchFeedback.enabled
  • call.mute.reminder.period

Home Screen Icon Customization


  • homeScreen.placeACall.enable=“0” (Default: 1)
  • homeScreen.present.enable=“0”  (Default: 1)


When Content Sharing is enabled, the “Content” icon for Open SIP environments or “Present” icon for Skype for Business environments displays by default on the Home screen of the RealPresence Trio system when paired with RealPresence Trio Visual+.


You can control whether to show or hide the content sharing option from the Home screen even when Content Sharing is enabled. 


Improved In-Call Indication


“Back To Call” banner across home screen during calls now oscillates through lighter to darker shades of blue during calls.

Reduces chances that the Trio will unknowingly be left in an “in call” state.




Device Lock


The above has now feature parity with the Polycom VVX Business media phone that already uses this functionality.




  • Lock code prompt only after new sign-in
  • Can change the code from settings menu
  • Supports Skype for Business device lock policies
  • Supports emergency and authorized call numbers when locked
  • Mutually exclusive with currently implemented OpenSIP “Phone Lock” feature
  • Can disable feature from Trio with feature.deviceLock.enable=0





Specifies the timeout in minutes for the Create Lock Code prompt after Device Lock is enabled. It can take values from 0 to 3 minutes. If the user does not respond to the Create Lock Code prompt to create a lock code within the timeout period, the user is signed out of the phone.


0 (Default) – There is no timeout for the Create Lock Code prompt.


Configures phone behaviour after six unsuccessful consecutive unlock attempts for Device Lock.


0 (Default) – After six unsuccessful consecutive unlock attempts, phone displays a decreasing timer message “Try to unlock after 60 seconds”.


1 – After six unsuccessful unlock attempts, the user is signed out.


Enables or disables Device Lock feature for a phone.


1 (Default) – Device Lock is enabled.


0 – Device Lock is disabled.


This parameter configures enabling or disabling Device Lock at the phone-level. The effective enabling or disabling of Device Lock on the phone also depends on the configuration on the Skype for Business server. For details, refer to the section Configure Device Lock


Quality of Experience / In Call QoE


Added QoE section in Skype Status Screen to indicate QoE server settings downloaded from In-Band settings.



To Enable on Skype server:

    • Set-CsMediaConfiguration -Identity Global –EnableQoS $ TRUE  -EnableInCallQoS:$TRUE -InCallQoSIntervalSeconds 10


Viewing a Different Calendar in Skype for Business Mode


The RealPresence Trio 8800 system in a Skype for Business environment can be configured to access a Microsoft Outlook calendar that is not associated with your Skype for Business account.


Scenarios for split Skype/Exchange login:  acquisition, legacy cleanup.This feature provides deployment flexibility for a split login.


To enable the feature: exchange.showSeparateAuth="1“  (default is 0)


Once enabled, there will be an advance exchange login in the Trio integrated UI and Web admin interface




  • Does not support Oauth in this version.  It will use NTLM for Exchange login
  • Doesn’t work if Skype user does not have a exchange mailbox


Web Sign In for Skype for Business Online


Web Sign-in is enabled by default on devices registered with Skype for Business Online and enables users to securely log in to Skype for Business from the phone, computer, or mobile web browser.  


Secure Single Sign-On (SSO) with Third-Party Supporting Solutions


Third-party Single Sign-On (SSO) is an authentication method that allows users to use the same login credentials to log in to multiple cloud-based applications, such as Microsoft Exchange and Skype for Business at the same time. SSO enables users to switch between different cloud-based applications during a single session, without being prompted to enter login credentials every time. 


RealPresence Trio 8800 and 8500 systems currently support Okta and Ping Federate.


Improved Presenter/Attendee Roster Control


  • Users can now select a participant from the call roster screen in order to make the participant a presenter or attendee.
  • Previously the 'Make Presenter' / 'Make Attendee‘ action was implemented via the global menu.
  • This will significantly improve the user experience for this commonly used in-meeting feature (participants are typically invited with attendee rights only)



Distribution List Expansion (DLX)



  • Adds Exchange distribution lists onto the phones contact for quick access to users
  • Saves time from creating your own groups


  • Add an exchange distribution list from Skype for Business Client
  • Expand the DLX from the phone contacts



Improved Software Update Experience


  • Improved orange status on the top right corner of the Trio touch screen
  • Improved messages in the Trio status bar
  • Improved Trio TV UI status screen indicating the software being updated, when the trio is rebooting after the upgrade and the paired visual plus updating



Hybrid Registration


The above is no longer a sandbox feature as shown prior => here <=




  • L1, L2, Lx line switching is no longer valid and has been removed from the digitmap
  • Customers that run a voice platform and is different than your video conference platform such as Skype (Must be Line 1) and Polycom DMA
  • Customers that need access to providers like Zoom and Bluejeans
  • Customers that need to pilot Skype while supporting existing call platform
  • IT support for multiple call platforms
  • Using Skype Meeting while levering your IP PBX for local dialing

Zoom Configuration


  • Polycom supported interop with Zoom CRC
  • Supports audio, video and content in both directions
  • Supports one touch join of zoom outlook plugin invites via Trio’s exchange calendar
  • Supports on touch line key into the Zoom auto attendant “the lobby” by default
  • Configuration can be adjusted to use the line key for customized bridge dialing
  • Firewall requirements for signaling and media ports => here <=  
  • Can be configured as the only line key or it can be setup with hybrid registration with either opensip or Skype



Bluejeans Configuration


  • Polycom supported interop with BlueJeans Relay
  • Support audio, video and content in both directions
  • Support one touch join of BlueJeans calendar invitations to Trio’s exchange calendar
  • Support one touch line key dialing into the BlueJeans auto attendant “the lobby” by default
  • Configuration can be adjusted to use the line key for customized bridge dialing
  • Firewall requirements for signaling and media ports => here <= 
  • Can be configured as the only line key or it can be setup with hybrid registration with either opensip or Skype



Improved Opensip Registration Fail-over Support


A Cisco CUCM as an example usually consist of multiple Subscribers and to guarantee the failover a new set of configuration was added to allow multiple servers to be added (Does not yet work with Proxys!)




What is available now on web?


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Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
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