Set Call Security options
User Configuration\Administrative Templates\Windows Components\NetMeeting
Sets the level of security for both outgoing and incoming NetMeeting calls.
The NetMeeting folder containing this policy is created by the Conf.adm administrative template. Conf.adm is included in Windows 2000, but does not load in Group Policy automatically. To display the NetMeeting folder, add the Conf.adm administrative template to Group Policy.