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.
Telintel (www.telintel.net) was founded in 1997, to meet the growing telecommunications market between United States and Latin-American, offering private channels, FAX-services and Internet.Telintel is based in Miami (US) where is licensed to deliver loca