Classes of Service
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.
A telephone service available both in digital and analogue systems allows displaying a number of the calling subscriber on the display. And where it is
possible the caller’s name can be also lighted up.
iBasis
iBasis is a leading carrier of international long distance telephone calls and provider of retail prepaid calling cards sold online and through retail stores throughout the U.S. We provide high quality service for billions of minutes of international call
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