Did you check the FAQ I posted ?
Possible Reason 3:
Wrong Username or Password on the Phone end.
Please ensure that the apps.statePolling.username or apps.statePolling.password on the phone end Settings > Applications > Phone State Polling has not changed from test.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
it's working now. But the password field is still blank because I don't know the default password.
as documented in the FAQ do not change the password from the default password test