Embodiments of the present invention relate to systems and methods for wireline-to-wireless communications. Communications are established with a personal digital gateway to control access, sharing, security, andor management of up-to-date personalized data exchanged between or among a plurality of associated communications devices andor communications networks. In particular, by monitoring user activities while one or more users view the document during multiple sessions, the computer system can identify the most relevant content at a particular time. The first injection unit connected between the differential output terminals of the first delay cell receives and injects a first injection signal to the differential output terminals of the first delay cell.