A group of users can be created with a purpose of receiving voice announcements through the speaker of a telephone set, but it has to be in the waiting mode.
Matrix SETU VGFX is a powerful gateway that supports classic telephony networks, GSM-services, and VoIP-telephony. Matrix SETU VGFX provides intelligent routing of incoming and outgoing calls between different networks, and does it in such a way to ensure the minimum cost of connection.