Hello Deepak Bisht,
welcome to the Polycom Community.
There is usually no need to "bump" a post and we specifically ask people not to do this. We will repsond when we have an answer.
The community's VoIP FAQ contains this post here:
Jan 19, 2012 Question: How to troubleshoot Polycom VoIP related Issues?
Resolution: Please check => here <=
So far you only mention it does not work but did not provide details like a software version or any logs.
If you are having an urgent issue please contact your Polycom reseller.
In order to raise a support ticket you need to work with your Polycom reseller as they need to do this for you.
If this is some sort of an Internet discounter please post either your phone's MAC address or your Polycom devices serial so I can look up who would be able to support you.
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