I think he's referring more to stuff like teamspeak and ventrilo. I tried to install teamspeak on my installation and it was having problems not sure if anyone else has been able to get teamspeak working on core 5 yet or not though. I'm thinking we need an open source VOIP teamspeak type solution.
OS: Arch Linux x86_64
Laptop: Lenovo ThinkPad L440, CPU: Intel Core i7 4702MQ Quad Core 2.20 GHz, Ram: 16GB DDR3, Hard Drive: 500GB, Graphics: Intel 4600 HD, Wireless: Intel 7260AC