Here is a dictatorial to use for your computers. Something to remember there this also an app available for Android or iPhone look in your app store for Ventrilo.
If I remember correctly only 10 people can get on at a time. I don't believe at has ever been reached. With Ventrilo you can both voice chat or type chat. Yes is possible to have both on the same time on a computer or a smartphone
BEE HAPPY Jim 134 Note from Buzzbee
The port is
Open setup and make sure top three boxes in upper left are checked.
Uncheck key clicks, it will drive you nuts.
Mouse click in the hotkey area and you can then hit any key you wish to use as a hotkey for your mic. I generally use the left control or alt button as it does'nt interfere and activate my mic if I'm typing something when ventrilo is active.
And remember this tip, you need to close the setup window to be able to use your mic. Not sure why that feature wont work while setup is open.