WMM/WME Extensions

Does anyone know if the AirPort Extreme supports WiFi Multimedia (WMM) aka Wireless Multimedia Extensions (WME)? I have a VoIP phone that requires WMM to function and am trying to determine if I can use it with an AirPort Extreme. The spec sheet doesn't mention it, but it seems like a feature Apple would have in their product line.

Thanks,
-Ryan