Voice chat doesn’t work on University or Business network
If you find that you have this problem only on a university or business network, please have the network admin contact support for whitelist information. They’ll need to speak with one of our technical specialists to get this information. We’ve seen situations where some corporate/university routers classify our Voice over IP (VOIP) traffic as Peer to Peer (P2P) over SIP which gets blocked on many networks for various reasons. One of the most common ones is to prevent piracy on the network. (If these acronyms don’t make sense to you, your network admin should be able to make sense of them.)
Please keep in mind that this is only for business/university class routers. You shouldn’t need to do this on a home router (and in many cases you cannot.)