Onineko uses discord app for voice. It's a new service thats pretty damn good.
Think of it like Ventrilo, Mumble and IRC rolled into one, and it's free!
Allows for push to talk.
We recommend you create/claim an account.
You can then log in and use the Invitation Code.
Web app, listening and text only.
Don't give a fuck.
No account needed.
Use this code if you already have Discord.
Under Voice settings, change Input Mode to Push to Talk, then assign a key.
Under Notifications settings, uncheck the two PTT boxes.
If you have the desktop app, clicking the plus icon in the left bar will show a dialogue. Click 'Join a Server'.
Enter the invitation code and click Join.
Bottom left, cog icon.