Hcl Server Rack Netmeeting Problem In A WiFi Network Between Lenovo And My HCL?

Netmeeting problem in a WiFi network between Lenovo and my HCL? - hcl server rack

I NetMeeting 3.01 with a range of mileap HCl (30 GB HDD Windows XP SP2). I'm on a wireless network with routers. The problem is, I want to) phone calls with NetMeeting WiFi Ian (networking. I have tried using a laptop HCl and everything was in order.
But when I tried, can not hear with 2 laptops from Lenovo, the other side! But if you use a LAN cable to connect the cross, everything works fine. You can hear me, but I can not hear them. All functions work well in NetMeeting.
I do not understand how it works with the LAN cable, but not WiFi - even if you have a direct connection via a wireless computer to another - so you can blame the server. I tried to include all activities on the Internet via Google search, such as ports, etc. Some have said that the routers could be the problem - but how do I connect to this list? Some say that the driver can be a problem, but my audio drivers are fully updated.