Clearspan Assistant is an integrated toolbar that enables users to make and accept telephone calls, change telephone settings, and access directories from within Microsoft Outlook®, Internet Explorer® and Firefox/Mozilla browsers. Internet Explorer and Firefox users are automatically logged-in to the Clearspan Web Portal where they can configure personal call services including Call Forwarding, Anonymous Call Rejection, Do Not Disturb, Simultaneous Ringing, Remote Office and Voicemail. The desktop toolbar allows users to access and manage these services with a click of a button.

The toolbar can be customized in several ways including choosing a language, and changing key visual elements within the toolbar for branding purposes. Users can customize the toolbar by modifying its position in Microsoft Outlook, Internet Explorer and Firefox browsers.