In order to have netmeeting working with the Quintum, you ned first make the Quintum work as a H323 gateway.
You will need to connect the lines to the FXO ports, setup the equipment to make calls from the internet side of the box into the PSTN ports.
Once you get there, you need to do some small modifications to acomodate for the restrictions of netmeeting.
But untit you get a H323 to make a sucesfull call trought the Quintum,you do not have a chance.
If you need help, write to mike3799@yahoo.com