IP (DiffServ) Tagging and Windows

[bernard goehrs]

We have Voice (VoIP) and Data coming out of the same NIC of our Windows Boxes. To improve the Quality of voice (minimize network transport delay of those IP/UDP Packets) we are looking for a Windows Tool that lets us give the VoIP Application (SoftPhone) priority over other running applicatons by setting a specific DiffServ codepoint within the IP Packets.
Since Winsock2 there is a QOS API for Windows and our HP 4000??s switches can do DiffServ priorisation; so did anyone see what we are looking for anywhere?

thanks, bernard

[Neo Tran]

Did you find an answer to this yet?
I've been looking for examples of how to set the DiffServ code point using the QoS API but i'm unsuccessful.

[Ludhi Sidikpramana]

same here!