In data transmitting systems, an apparatus for synchronizing the frame clock in unitsnodes. Strips of second electrodes are arranged in a second direction, perpendicular to the first electrodes, and insulated from the first electrodes. The radiating layer comprises a dielectric layer, a radiating element formed on a first side of the dielectric layer, and a moat formed in the dielectric layer around its perimeter forming an inner perimeter sidewall and an outer perimeter sidewall. The algorithm has been implemented and applied to embedded testing of telephone services in an IN architecture, including the Basic Call Service as well as other supplementary services. A dongle is removably coupleable to a rendering device, with the dongle performing transcoding so as to allow presentation of the media in a secure manner without modification of the rendering device software or hardware.