As expected, the Wi-Fi Alliance is now certifying products to an interim standard called Wi-Fi Multimedia, or WMM: The standard, which is a precursor to 802.11e, is meant to improve audio, video, and voice applications over Wi-Fi. A handful of products from vendors including Atheros, Cisco, Broadcom, and Intel have already been certified for WMM. The 802.11e standard will include quality of service mechanisms, which will allow network administrators to give priority to traffic such as voice that suffers from delays.