Ishnu Por Ah uses Mumble instead of Vent for their VOIP service. The reason for this is that it is a lower latency chat program that is also open source and there for free and manageable by us.
To download the Mumble client visit here-
http://mumble.sourceforge.net/Installing_MumbleThe currently used client is 1.2.2
The server information is as follows -
address : 205.186.146.113
port : 64738
password : available in Guild Info in-game for guild members. Non-guildies, ask a guild member.
Any questions or problems concerning installation, set-up or use, speak to Gohir or Redearth.