Hello Ganesh,
welcome back to the Polycom Community.
It would be useful to find out more details how these units where powered and if these failed at the same time.
In order to professionally troubleshoot this please work with your known Polycom Sales Engineer.
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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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.
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