Polycom VVX400


Polycom VVX400



Model: Polycom VVX400


I have these 2 issues


1 - Lights don’t light up when in use (example mute or speaker button when pressed)


2 - On startup, there’s an error: Registration settings, MAC Address, 3.3.0 Parameters




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Polycom Employee & Community Manager

Re: Polycom VVX400

Hello Abe,

welcome to the Polycom Community and I have moved your post into the correct section.


Both issues are most likely caused by yourself using old Parameters / Software on this VVX phone.


The VVX400 only runs UCS 4.1.4 or later and you most likely used parameters from a SIP software before UCS 3.3.0 was introduced.

The community's VoIP FAQ contains this post here:


Feb 26, 2013 QuestionWhat is the meaning of the Error message "pre-3.3.0 params" or similar?

Answer Please check => here <=

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services


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
Message 2 of 2