chamada de retorno definida pelo chamador(In Network Connections, a form of callback in which the user supplies the telephone number that the remote access server uses for callback. This setting spares the user any long-distance telephone charges)
retorno de chamada definido pelo chamador(In Network Connections, a form of callback in which the user supplies the telephone number that the remote access server uses for callback. This setting spares the user any long-distance telephone charges)
