The system of Classes of Service (COS) helps defining rights for one or another extension in the PBX or Centrex systems. For example, few groups require more space for storing voice messages, while other need the redirection of calls to cell phones, the third does not have to make calls outside of the office network. With the help of this system one can change and configure settings.
Nexevi International Inc. is a leader in development and production of telecommunications equipment. Nexevi focuses on the business –to-business strata, as well as the Business-to-Customer and Business-to-Government market segments.