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.
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VoIP Cloud peering, Wholesale services, peering and routing voice services, interconnecting and interworking peer to peer mode (SIP and H323)
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