links

http://www.etsi.org/technologies-clusters/technologies/radio

http://www.ietf.org/rfc/rfc3714.txt
http://www.ietf.org/

http://www.gobookee.org/voip-performance-management-and-optimization/
http://www.gobookee.org/get_book.php?u=aHR0cDovL3B0Z21lZGlhLnBlYXJzb25jbWcuY29tL2ltYWdlcy85NzgxNTg3MDU1Mjg3L3NhbXBsZXBhZ2VzLzE1ODcwNTUyODcucGRmCmlpIFZvSVAgUGVyZm9ybWFuY2UgTWFuYWdlbWVudCBhbmQgT3B0aW1pemF0aW9u

http://myaccount.flukenetworks.com/fnet/es-es/solutions/itnetworking/VoIP+Performance+Management+in+the+Converged+Network

http://caia.swin.edu.au/cv/kstoeckigt/kstoeckigt-2010.pdf