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Unable to utilize color expansion module buttons VVX 401

Occasional Visitor

Unable to utilize color expansion module buttons VVX 401


I am running into problems with the color expansion module for our VVX 401. I am using two expansion modules and cannot add more than 100 contacts. VVX software is and using EFLK. Is there a possible way to get pass the 100 contact limit to utilize the rest of the 68 unused buttons?


Thanks in advanced.

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Polycom Employee & Community Manager

Re: Unable to utilize color expansion module buttons VVX 401

Hello @MarcoHernandez,

welcome to the Polycom Community.


Usually a community search should find multiple posts on this already.

I therefore updated the Skype for Business FAQ to contain this information already in the text and the post itself in addition to the Admin Guide outlines this clearly:


Jan 04, 2016 Question: Can I change / re-assign the appearance of  a Line and / or Presence Keys?

Resolution: Please check => here <= and the limit using EFLK is 100.

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

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
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