[Tails-dev] Why OnionCat + Mumble - why not just Mumble?

Hi!

Quote https://tails.boum.org/blueprint/VoIP_support/ :

> Preliminary testing showed OnionCat + Mumble to be a working and
relatively easy to setup Tor-enabled VoIP solution; the 1/2s - 1s delay
is only slightly annoying.

Why OnionCat + Mumble - why not just Mumble?

Mumble has a TCP mode. Why involve QnionCat?

Cheers,
Patrick