I have started a PvP voice chat for =LEVEL 60 = using Raid Call. Its free and can have up to 10,000 users in the lounge and 3,000 uses in each channel.
Download it at www.raidcall.com
After its open and free account is made enter the ID: 5490081 to join.
I know theres lots of different instances of pvp but its better than nothing untill Trion build ingame voice.