* SKEW = * Jitter = * Delta = * http://www.scribd.com/doc/39107992/VoIP-Statistics-Explained * http://books.google.com/books?id=OM7YJAy9_m8C&pg=PA175&lpg=PA175&dq=RTP+skew&source=bl&ots=hUOESKrWB4&sig=F2cjXTyonrfi5R7pgKjuHRli4SA&hl=sv&ei=np1STe-PFIfLswbL7bjyBg&sa=X&oi=book_result&ct=result&resnum=10&ved=0CEQQ6AEwCQ#v=onepage&q=RTP%20skew&f=false * http://www.wireshark.org/lists/wireshark-users/201102/msg00037.html