INNOVATEC DE VENEZUELA, C.A. Av. Francisco de Miranda, Calle Capitolio Torre Bazar Bolivar , Piso 3 Oficina 302, Boleita Sur Caracas Miranda ,1071 Venezuela
Allows users tracking the condition of the other telephone or the subscriber, for example, there will appear a signal on the screen of the telephone device informing that the subscriber is on the line and is temporarily unavailable.