Polycom phone issues

Occasional Contributor

Polycom phone issues



We are having a number of issues at one of our clients site, see below:


Issue – Polycom Trio 8800 - Doesn’t receive an IP address from DHCP Server

14 of the clients 15 Trio’s are not receiving a DHCP address. All were fine until the last month or so.


Issue – Polycom VVX – Regularly signs out of Teams

These phones will sign out of their Teams account after a random period, maybe 3 days, maybe 2 months.

They actually sign into a off prem Skype server hosted by Microsoft and this then links to its Teams account.


Issue – Polycom Trio 8800 - Doesn’t receive an IP address from DHCP Server


We have looked into this, and discovered there is a setting on the Polycom Phones called CDP Compatibility, by disabling this the phone then gets an IP.

We would like to investigate this further however, as for the last 5 years the Trios have worked fine without any issues. Are there any drawbacks to disabling CDP compatibility.


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Polycom Employee & Community Manager

Re: Polycom phone issues

Hello @TattyPolyFreak ,


Welcome to the Poly Community.

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Best Regards

Steffen Baier


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.


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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.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections
Message 2 of 3
Trusted Contributor

Re: Polycom phone issues

I can't speak to the DHCP issue, other than to say it is likely due to a change on the network side and not the devices. However, looking at the logs on the affected devices may help you identify the issue.


As far as the issue with the Poly VVX phones signing out of their accounts, you need to reconfigure these devices to connect to the Teams SIP Gateway instead of the legacy Skype for Business Online gateway. Upgrade Skype for Business Online (3PIP) phones to Microsoft Teams using SIP Gateway - Microsoft Com...

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