After 4 four years, The IEEE has recently ratified the 802.11r standard.  This is good news for wireless voice roaming and vendor interoperability. This new standard  allows

Voice Over WLAN Design Guide Now Available
Facilitate Faster, More Reliable Customer Deployments
http://www.cisco.com/application/pdf/en/us/guest/n...
 

The Voice over WLAN V.1 Validated Design Guide enables faster, more reliable and more