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VVX310 cannot close local RTP ports


VVX310 cannot close local RTP ports

 I am seeing the following errors in our logs since the upgrade to firmware 5.1.1


0826102436|so |5|00|soStreamNetDisc ERROR - Cannot close local RTP port
0826102436|so |5|00|soStreamNetDisc ERROR - Cannot close local RTCP port



Users are complaining of failed transfers and random reboots. Could this be related and also what is the exact nature of these errors. 

Message 1 of 3
A. van der Reep
Occasional Visitor

Re: VVX310 cannot close local RTP ports



We see the problem also.

We are running with the following versions.


Softwareversie UC Updater-versie


Users are complaning that they can't hear the caller.



Message 2 of 3
Polycom Employee & Community Manager

Re: VVX310 cannot close local RTP ports

Hello all,

like with any other support related issues this needs to be raised via your Polycom reseller to be brought to the attention of Polycom support.


We need the following:


  • Unfiltered Wireshark trace from a spanned port on the phone end
  • Phone App & Boot logs
  • Backup of the Phone configuration

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 3 of 3