RTP packets

Suppose I have an * server and two sip extensions registered on it, and they are in three different places.
SIP packets follow this path:
EXT1=>net=>*=>net=>EXT2
What about RTP packets?
Do they folllow the same path or this one?
EXT1<=>net<=>EXT2
I hope my question have a sense.
C.

Ok, I found the answer in pervious posts.
C.