Hello @Prasanna Bajpai,
welcome to the Polycom Community.
The Interface should have a label with the MAC address and next to that should be a date.
Alternative post the MAC and we can look this up.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
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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.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections