Two weeks ago, I sent the following message. Since that, I had no real respons and solutions. Can someone help me with this problem ? Thank you at all the group, Ernest Geyskens Responsable du développement des nouvelles technologies Assistant Informatique & Bureautique Ceran Lingua International (CLI) Direct Phone : +32 (0) 87 791 237 Fax : +32 (0) 87 791 199 Email : Ernest.Geyskens@xxxxxxxx URL: http://www.ceran.com ------------------------------------------------------- Since a lot of time, I try to resolve a problem with ISA Server. Nobody is able to give me a solution. We would like to make NetMeeting via our ISA Server. For the moment, we search only to make outgoing call. If we follow all the instructions (Microsoft, Shinder, ...), we do not need to configure a Gatekeeper. Then I configure the H.323 Protocol as well as the H.323 Application filter. After that : - We can make a call. - We can chat. - The other people can hear me very well. But .. - I can't hear him and see him. We work on a Network with NT 4 WorkStations. The ISA server is Winbdows 2000 Server. Please, can someone say me if there is a solution, an article or any information or instruction I can get to do that ? Thank you in advance. Ernest Geyskens.