ICUII is a full-color IP-based videoconferencing system. ICUII includes a Quick Message function that can send audio, text, and/or a video image to any user on the directory, or to your Pal list. Other features include visual caller ID, a 'do not disturb' option, a buddy list, picture e-mail, user profiles with pictures, a 320x240-pixel viewing screen, content filters, and global listings, Instant Message forwarding of new and saved Instant messages. Home and office routers and intranets can use ICUII on all machines. PAL authorization that lets you decide who adds you to their pal list and lets you remove yourself from unwanted pals. ICUII has all in one instant messaging from the four most popular programs. AIM, ICQ, MSN, and, Yahoo are integrated into one system.

Version 7.7.1 has added server assisted calling to improve performance with routers and firewalls.