Authors' Addresses

Jason Fischl Skype, Inc. 2145 Hamilton Ave. San Jose, CA 95135 USA

Phone: +1-415-692-1760 EMail: [email protected]

Hannes Tschofenig Nokia Siemens Networks Linnoitustie 6 Espoo, 02600 Finland

Phone: +358 (50) 4871445 EMail: [email protected] URI: http://www.tschofenig.priv.at

Eric Rescorla RTFM, Inc. 2064 Edgewood Drive Palo Alto, CA 94303 USA

EMail: [email protected]