This is a way of communicating on the half-duplex communication line, includes receiving and transmitting devices (walkie-talkie) by the way of pressing the button for switching to the voice mode or transition to the listening mode. It works as a radio speaker; one can talk by pressing the button and can listen to a voice message by releasing the button.
ASK-VoIP S.A. (ASK-VOIP S.A. is former ASK-VOIP LTD) is a Panama-based telecommunications provider specializing in wholesale international voice traffic.