A message which is played to the called party before answering the call, in the most cases the message tells who is calling, the name or telephone number helping you to decide how to answer to the call and sometimes whether to answer it at all.
Internet Solutions Alliance Inc., in Ontario, Canada, is an international communication provider over a foremost Voice over Internet Protocol (VoIP) technology. Using an existing high-speed Internet connection, ISAs technology enables anyone to make and r