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VVX 300 does not ring when receiving calls from analog phone.

Occasional Visitor

VVX 300 does not ring when receiving calls from analog phone.

VVX 300 does not ring when receiving calls from analog phone.


We run Skype for Business in our infrastructure.  Skype for Business software is installed on the computer and the VVX 300 is paired with the software.  When calls come through, Skype for Business will ring as well as the  VVX300.  However, when calls are from analog or certain mobile numbers, the VVX will not ring - just Skype for Business soft phone will ring.


Any idea on how I can rectify this issue please?


Many thanks.



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Polycom Employee & Community Manager

Re: VVX 300 does not ring when receiving calls from analog phone.

Hello Robbie,

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


For the phone the location or the source of a call does not make a real difference as it is registered to Skype for Business and the server tells it when to ring and when not.


I suggest you open a Ticket with our Partner Microsoft as there are different Networks, VLAN's etc. involved.

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 Polycom 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. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.


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