Plantronics + Polycom. Now together as Poly Logo

[Software] UC Software 5.2.5 has been released

Polycom Employee & Community Manager

[Software] UC Software 5.2.5 has been released

Hello everyone,


We are happy to announce the availability of Polycom® UC Software 5.2.5,  associated utilities and documents on the Polycom Product Support web pages ( )


UC Software 5.2.5 is a Maintenance release which supports VVX Business media phones and SoundStructure VoIP Interface which critical field fixes.


Jan 21, 2015 Question:Why does Polycom release / maintain different software versions ?

ResolutionPlease check => here <=


For Full list of Features and fixes please have a look at the Release Notes.


Polycom UC Software 5.2.5 offers support for the following endpoint platforms:

  • VVX® 300/310 business media phone
  • VVX® 400/410 business media phone
  • VVX® 500 business media phone
  • VVX® 600 business media phone
  • VVX® 1500 business media phone
  • Polycom® SoundStructure® VOIP Interface

This release also provides support for the following VVX accessories:

  • Polycom VVX® camera
  • Polycom VVX® Expansion Module


Polycom UC Software 5.2.5 is a general release for all open SIP platforms, Microsoft Lync 2010 and Microsoft Lync 2013.


Note that if you are using Polycom UC Software 5.2.5 with Microsoft Lync Server, you cannot register multiple lines on one phone.


New or Enhanced Features Polycom


UC Software 5.2.5 includes the features and functionality of previous releases and includes the following new features:


  • Lock Access to Edit/Delete/Modify Polycom directory.

  • Changes to Active Call Display on VVX 500/600 => here <=

  • Changes to Off Hook dialing on VVX 500/600

  • Allow the minimum ringer volume to be configured

See the section Configuration File Enhancements for the permitted values and descriptions for each feature’s parameters within the release notes.


What is available now on web?

  • UC Software 5.2.5( Split & Combined)
  • UC Software 5.2.5 CAB files for upgrade through Lync server
  • Release Notes for 5.2.5 [PDF]



How to download UCS 5.2.5 software, release notes & documents:


You can obtain the software and the related documentation from the supported phone model pages: example Click VVX300/Polycom® Latest UC Software Release/ Polycom® UC Software Support Center

UCS 5.2.5 is now available on the Polycom Hosted server and Phone can be upgraded by using the phone’s web Interface.

The title Polycom 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