This document discusses audio conferencing technologies and solutions. It describes various audio conferencing options like audio telephony bridges, web telephony bridges, and video support. It also outlines BT audio conferencing Express, MeetMe, and Premium options, as well as Skype. The document discusses how web technologies can enhance audio collaboration through features like booking and managing audio meetings, video, recording, demonstrations, presentation tools, text questions, polling questions, document sharing, and application sharing. It concludes that audio meetings are cost-effective for collaboration but are limited to voice, though web technologies add supportive collaboration tools.