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HDX 8000 phantom calls

Occasional Contributor

HDX 8000 phantom calls

Hi there, we have a HDX8000 on IP only that keeps receiving calls from,,, etc where is the same IP address as the unit.


This keeps happening at about every 40 minutes or so and will drop a current connected conference.


It appears to be the same issue as JRobert's VS4000



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Polycom Employee & Community Manager

Re: HDX 8000 phantom calls


welcome to the Polycom Community.


This has been discussed in the community before on multiple occasions using different topics.


This is most likely some SIP scanner trying to find a unprotected SIP server in order to commit some toll fraud if successful.


Have a google for sip vicious or friendly scanner as this explains this.


A few more details on your end would help us to make suggestions.


  • Is this Endpoint on the Internet and has all ports open ?

  • Do you use SIP ?

    If no to the above simply block port 5060.


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 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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