A system and method for the efficient utilization of core telecommunications resources during a datacom session over a connection-oriented telecommunications system is described. The improved beam front has a profile with a plurality of undulation and the plurality of undulations define a plurality of annular peaks and annular valleys. The dielectric constant and thickness of the first dielectric layer is \u22081 and d1; and for second dielectric layer \u22082 and d2, wherein 0. Braces which fold out from the handle strengthen the tray. Heating for the AFM to FM transition is provided by write coils andor a coil located near the AFM-FM phase change material to enable faster transition times. Application in the synthesis of perindopril and pharmaceutically acceptable salts thereof.