Polycom Releases UC Software 5.4.0 for VVX and SoundStructure (July, 2015) and introduce VVX 101 and 201 series

Polycom Unified Communications (UC) Software 5.4.0 is a release for all open SIP platforms in addition to Alcatel-Lucent CTS Server and Microsoft® Lync® Server. UC Software 5.4.0 is the first release to support the new VVX 101 and VVX 201 business media phones.

Please note that UCS v5.4.0 (or higher) is the minimum software version needed for VVX® 101 / VVX® 201 Business Media Phones.

P VVX phones registered to or should be running UCS 5.3.1. The 5.4.x build is not for Lync/SfB.



Polycom UC Software 5.4.0 supports the following Polycom endpoints and accessories:

  • VVX 101/201 business media phones (new phones supported in this release)
  • VVX 300/310 business media phones
  • VVX 400/410 business media phones
  • VVX 500 business media phones
  • VVX 600 business media phones
  • VVX 1500 business media phones
  • SoundStructure VoIP Interface
  • VVX Camera
  • VVX Expansion Module

New Features:

Please note that is seems that there aren’t any new feature introduce for Lync/SfB and most of the feature are for supporting Alcatel Lucent CTS and other Polycom SIP features.

Polycom UC Software 5.4.0 includes the features and functionality of previous releases and includes the following new features.

  • Advanced Conference (Alcatel-Lucent CTS)
  • Barge In for Busy Lamp Field Lines (Alcatel-Lucent CTS)
  • Bridge In for Shared Call Appearance (Alcatel-Lucent CTS)
  • Dual-Tone Multi-Frequency (DTMF) Relay (Alcatel-Lucent CTS)
  • Shared Call Appearance (Alcatel-Lucent CTS)
  • Visitor Desk Phone (Alcatel-Lucent CTS)
  • SIP Instance Support – The SIP Instance Support feature provides support for using +sip.instance, a parameter used in the contact header, to identify individual phones instead of using IP addresses.
  • Comfort Noise – Previously, when Voice Activity Detection was enabled, Comfort Noise was sent using the default payload type of 13, which was not advertised in SDP. Now, when enabled, the Comfort Noise payload type is negotiated in SDP with the default of 13 for 8 KHz codecs and a configurable value between 96 and 127 for 16 KHz codecs
  • Opus Codec Support (supported on VVX 500 and 600 phones only) – Opus is an adaptive, lossy audio coding format that is suitable for interactive real-time applications over the Internet. This feature also simplifies internetworking between mobile and fixed line networks.
  • DNS Server Address Override – Previously, any DNS server address provided by DHCP is given the highest precedence even if an administrator manually enters a DNS server address.
  • Global Directory Synchronization – The Polycom Contact Directory available on Polycom phones uses two files to generate and maintain a directory
  • Basic Menu Lock – This feature enables administrators to lock the Basic menu under Settings and prevent users from customizing the phones on the network.
  • Additional Features in This Release


  1. Jon

    As a perfect example of Polycom’s ever declining firmware quality, you can’t dial * or 0 DTMF tones in a call, but 1-9 and # work, and they work when dialing a number. According to their forums, they are aware of this problem.

    For the last year, each release breaks more things than it fixes.

  2. Pingback: Weekly IT Newsletter – July 6-10, 2015 | Just a Lync Guy

  3. Leon

    Even though you mention 5.4 is not for Lync / B4S, I went ahead and tested it on a couple of phones against Lync. It actually works better than 5.3.x. With the Option 43 override we are now able to use pin auth. The comfort noise generation now actually works as well when set in the config. All other features that we were using is working as well. I suspect it simply hasn’t been approved by MS yet.

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