Adaptive Jitter Buffer Management

Voice Activity Detection

Silence Suppression

Comfort Noise Generation

Acoustic Echo Cancellation (3rd party sourced, not provided by Microsoft)

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.

*A 3rd party supplicant is currently under consideration for a future release

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.

*Fast roaming enhancements are under consideration for a future release

Cisco Compatible Extensions (CCX) – The WLAN module firmware and driver would have to be updated to support the CCX v4 ASD feature set.

*A CCX v4 implementation is currently under consideration for a future release

Certain features of 802.11e [WMM] are not currently supported.

oAutomatic Power Save Delivery (APSD) and Unscheduled Automatic Power Save Delivery (U-APSD)power saving mechanisms are not

currently supported.

oEven 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.