The function allows the user by entering a 5-digit number to receive a call from any concrete company’s telephone. There are no definite groups for picking up the call. One can pick up the call from any telephone set; it is only necessary to enter the required code and the extension number of the phone, which has to be picked up.
After many years in the VoIP industry supplying long distance service and VoIP technical support, AirStar Communications has decided to expand into the residential and business phone service.