Hello jaisingh,
welcome to the Polycom Community.
It is always useful to provide some kind of history on the device you experience the issue with.
- Is this a brand new unit or is this a unit that only recently is showing this issue or is this a used unit that you have just purchased?
- When did this start ?
- Did you change any settings or has the unit been moved or have you tried to install any software as you posted something => here<= in regards a camera not working after an update.
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