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Issue with Expansion Modules

Occasional Visitor

Issue with Expansion Modules

VVX300 (v. works fine when answering incoming calls until I add the VVX Expansion module. With the expansion module attached when a incoming call is received it no longer shows an external caller id instead shows a different extension number. When I go to answer the incoming call it gives me a new Outgoing dial tone instead of picking up the Incoming call.


Have 6 phones in a ring group including the one with the Expansion Module. All Phones ring at same time. Using the VVX Expansion Module for BLF/Transfer for 12 phones.

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Polycom Employee & Community Manager

Re: Issue with Expansion Modules

Hello @GTramell,

welcome to the Polycom Community.

It is always useful to include the currently used UC Software version as issues experienced or a question asked may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes, Administrator Guides or FAQ post’s.

The above is also stated in the "Must Read First" and is the absolute minimum requirement every new post should include. .

In addition providing us with this basic information gives Polycom an idea what Software Versions are used in the field and avoids wasting time trying to troubleshoot issues which have already been addressed.

Therefore the Polycom VoIP FAQ contains this post here:

Question: How can I find out my SIP or UC Software Version of my Phone?
Resolution: 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

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Please be aware:For questions about the type of support to expect please check here

Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Poly employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and maybe answered on weekends, bank holidays or personal holidays.
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