Hello Suresh Maurya,
The only one I can find in the system is 0004F2FA53E5 and it has been sold via Nextusa back in 04/03/2016.
I would suggest the following:
- Factory reset the unit
Oct 10, 2011 Question: How can I reset / Factory default my Phones configuration?
Resolution: Please check => here <=
- Program it following this
Oct 7, 2011 Question: Can I register or is my Polycom Phone compatible with a “XYZ” SIP Server?
Resolution: Please check => here <=
If it works then your configuration is causing this. If it does not work with Nextusa to open a Ticket.
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
