The services provided by professionals in particular field. For example, a company may charge a certain sum of money for the certain tasks their consultant accomplished for the company who ordered the service.
Integration of real time products, such as chat, telephony (including IP telephony), video conferences, call control and speech recognition, together with “un-real” time products such as voice mail, SMS messages and Fax. “Unified Communications” is not a standalone product, but a set of products, which present a constant user’s interface among many devices and media types.