Hardware And Firmware - HP iPAQ 500 Series Application Note

 Adaptive Jitter Buffer Management
 Voice Activity Detection
 Silence Suppression
 Comfort Noise Generation
 Acoustic Echo Cancellation

5 Hardware and Firmware

This category is related to WLAN and other hardware/firmware components in the
handset that are critical to the performance and usability of VoIP.
Supported:
 802.11b/g
 802.11i (PEAPv0 and EAP-TLS with certificates)
 Encryption suites: WEP64, WEP128, TKIP and AES CCMP
Not Supported:
 Full 802.1X Supplicant – Microsoft provides the limited set of EAP
authentication noted above. Additional EAP methods may be required by some
customers.
 Fast Roaming – A basic roaming agent has been implemented, and specific
roaming performance results will be published when they become available.
802.11r "Fast Roaming" is currently unsupported.
 Cisco Compatible Extensions (CCX) – The WLAN module firmware and driver
would have to be updated to support the CCX v4 ASD feature set.
 Certain features of 802.11e [WMM] are not currently supported.
o Automatic Power Save Delivery (APSD) and Unscheduled Automatic
Power Save Delivery (U-APSD) power saving mechanisms are not
currently supported.
o Even though packet tagging [802.1p and Diffserv] is inherently supported
by Windows Mobile 6, there may not be any benefit by tagging voice
packets with a higher priority.
rd
(3 party sourced, not provided by Microsoft)
rd
*A 3 party supplicant is currently under
consideration for a future release
*Fast roaming enhancements are under
consideration for a future release
*A CCX v4 implementation is currently
under consideration for a future release