Hello @danur,
welcome to the Polycom Community.
The community's VoIP FAQ contains this post here:
Oct 24 2014 Question:How can I prevent tools like sipvicious or nuisance Cisco calls ringing my phone?
Resolution: Please check => here <= or Security Center: Security Bulletin Relating to Worldwide Botnet Dialing H.323-Capable Systems
Please ensure you always check the community FAQ and/or utilize the community search before posting any new topics or follow up post’s.
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
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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.
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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. 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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