It's YA on Steroids, minus phone, minus server. Interfaces between phone/pc/active directory/outlook contacts. Can drag-n-drop phone nbrs to it from any document, hit enter and it dials. Perform desktop taskbar lookup of names in active directory/outlook contacts, popus up their numbers, pick one and hit enter, it dials. several other interesting features, also combines pc companion. Unlike YA, IOC works only with the 53xx phones. There's a 5-day trial of the full product. Licenses seem to come in 5 packs. It's just now in rls 1.2 and yes there's some roaches in it but it's improving.