I must echo the sentiments of the other more experienced users here. A couple of quick questions do come to mind though. Is FS proxying the media between the endpoints? If so, is there any transcoding going on? If that's the case, you may want to enable late negotiation and tweak the codecs to avoid transcoding whenever possible, that can potentially take up a lot of system resources. Phil Quesinberry Q Systems Engineering, Inc. Electronic Controls and Embedded Systems Development (410) 969-8002 http://www.qsystemsengineering.com