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.
Media Gateway Dialogic I-Gate 4000 EDGE is a low-cost high-quality solution, which can be used as a border media gateway. Full support for all existing transmission standards and signaling VoIP traffic and the possibility of TDM telephony networking allows operators in development stage to effectively distribute CAPEX in the initial stages. This unit can handle up to 496 telephone calls simultaneously.