A heating system employs a ceramic substrate and a resistive layer. The adjustment occurs when a serving cell signal strength is below a threshold for a serving RAT and the target RAT is successfully acquired during IRAT measurement. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. After the diamond grains are positioned in each opening, the metal surface on both sides of each opening is pressed by the jig through two directions. This results in snapshots which can incorporate crash recovery features incorporated in application or operating system software in addition to the usual data image provided by the storage subsystem.