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.
ΑLTEC TELECOMS, a member company of ALTEC Group, possesses nowadays one of the largest Telecommunications Networks in Greece. The objective of ALTEC TELECOMS is to provide modern, complete communication services, for every home and business.
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