A TAE socket is still required today as the termination of the "last mile," as long as this comes into the house via copper. In the case of a fiber optic installation, it is obsolete in this regard. Future fixed-line connections will no longer be implemented bound to cables but rather to accounts, which in turn come into the house via the internet connection: in internet telephony, a virtual channel occupies a session, whereas in the TDM telephone network a physical line was "occupied." That means a telephony service provider no longer needs a dedicated "line," but simply uses an existing assumed Network Access. This is of course also terminated in fiber optics, but no longer via TAE.