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.
We are offering Reseller Level-I,II,III with high Quality.
We have Mobile Dialer, GPlex Dialer, SIP Dialer, Eazzy Dialer.
If you are doing VOIP Business in Middle East KSA, Oman, Dubai and other country you can contact with me.