Disable to create a specified PK request with direct connection.

In common case, there always be a direct connection request for login/join meeting requests; if this option is ON, the client application will try with system proxy (if have) at first Default policy is false. If this setting is true, client will disable the direct connection PK request. If this setting is false, client will always try direct connection even there is proxy server configuration. If this policy is not set, client will use the default setting.