Embodiments of the present invention provide installation templates and methods that allow placement of various sized equipment in a finished wall or ceiling. The interface includes a first switch receiving the input signal; a second switch that supplying the output signal; and control logic configured to close the first switch and open the second switch for a first time interval having at least a first temporal duration and until current through the first switch reaches a threshold. Therefore, the method of the invention overcomes the disadvantages of the related art and more particularly prevents fax failure due to difference of routing for a born network and cross-domain. A selection of an individual identified classification for the incoming data item can be received from the user. The method of the present invention comprises implanting a catheter into a patient and administering a therapeutic agent intrathecally into the patient’s cerebrospinal fluid.