The present invention monitors call signaling events stemming from a circuit-switched call between a caller and a called party and controls a packet-session between user agents on respective endpoints associated with the caller and called party. In the SiC semiconductor device, upon forming the ohmic electrode, a first metal layer made of one first metallic element is formed on one main surface of a SiC layer. Determining whether a transmitter operable at said identified transmission wavelength is present at the OLT and is available to be assigned to communicate with the ONT. The first photonic response is interpreted as a first numeric value. A sputtering gas is fed to the chamber under conditions effective to sputter the target and deposit a high k ABO3 comprising dielectric layer over the substrate.