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Musical Chairs- Names & Extensions keep moving

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Musical Chairs- Names & Extensions keep moving



My company has 6 Polycom VVX300/310 phones.  We are so confused because when looking at the screen, you can see users names beside extension buttons.  However, when you lift the headset, the names disappear and we are left with 1s and 0s.  Can someone help us understand why this is happening?  For instance, when our receptionist tries to transfer calls, the employee names disappear.  Also, is there an expansion module that would make sense for our receptionists' phone?


Thank you,

Allison Sanders

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Polycom Employee & Community Manager

Re: Musical Chairs- Names & Extensions keep moving

Hello Allison Sanders,

welcome to the Polycom Community.

It is always useful to include the currently used software version as issues experienced may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes.

The above is also stated in the "Read First: Welcome to the Polycom VoIP Forum"

Therefore the Polycom VoIP FAQ contains this post here:

Question: How can I find out my SIP UC Software Version or the BootROM Version of my Phone?
Resolution: Please check here

To answer your question you may want to look at this FAQ post here:


Resolution: Please check => here <= 


And the additional question yes you can purchase an Expansion Module as shown => 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

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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