Go on it even if dont have mic because it still helps to know whos behind u and afk.
download vent here: http://www.ventrilo.com/download.php
to get on the server you have to click on the little arrow next to server and fill out the form.
IP address: 144.140.154.11
Port: 3784
Its also good to use when playing COD4 as VOIP in that is shit
Pass in here:
https://ari-clan.forumotion.com/team-discussion-f4/ventrillo-t11.htm