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group 500 calls to itself

Occasional Contributor

group 500 calls to itself



I have following issue. Video endpoint group 500 has assigned public IP address. Additional it works without any additional infrastructure but it often call to itself eg  I can see on display that 1002@x.x.x.x is calling my endpoint where x.x.x.x is my endpoint public IP address. How to resolve this issue?




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Polycom Employee & Community Manager

Re: group 500 calls to itself

Hello Mathew,

welcome to the Polycom Community.

The community's Video FAQ contains this post here:

Apr 07,2015 Question: How can I prevent Phantom calls to my Video Solution?

Answer: A local Firewall or a Polycom Firewall traversal solution can be utilized to stop this. In order to add this to a possible future Software version in the form of a whitelist please contact Luriep => here <= or Security Center: Security Bulletin Relating to Worldwide Botnet Dialing H.323-Capable Systems


Basically someone is trying to hack your end point to commit call fraud.

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. 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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