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PC loses connection ip 331

Occasional Visitor

PC loses connection ip 331



I've several ip 331 phones :

the software version is

BootROM :


All the devices are powered by POE lan ethernet port. So I connect my computers on the PC ethernet.


The issue : when i disconnect a laptop for few minutes of the PC ethernet port, it seems that the port shuts down and i have to restart the phone to get it up, but the phone still up.


Is there any parameter i have to configure ?



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Polycom Employee & Community Manager

Re: PC loses connection ip 331

Hello zarmadaire,


welcome to the Polycom Community.


You would need to check the Phone's Log Files as described => here <= and in addition set the Logging Level for the Support Object to Event 3 or via a configuration file to"3".


If the PC Port is unplugged and replugged a Message like this will appear in the Log:


0215094822|so   |3|00|Link status is Net up Speed 100 half Duplex, PC down.
0215094824|so   |3|00|Link status is Net up Speed 100 half Duplex, PC up Speed 100 full Duplex.


The Phones can support dot1x / eapollogoff but you would need to contact your Polycom Reseller for further support on this.


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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