Hello alexchen1989,
welcome to the Polycom Community.
The community's VoIP FAQ contains this post here:
Sep 27, 2012 Question: I get the error Message “application not present / found” on my phones screen
Resolution: Please check => here <=
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
If official support is required please check how to phone or open a case here
----------------您好 alexchen1989,
欢迎来到Poly社区,下面的链接是来自社区的FAQ。
Sep 27, 2012 Question: I get the error Message “application not present / found” on my phones screen
Resolution: Please check => here <=
我们也建议联系您的总代或者Poly支持来提交问题。