An object of the invention is to reduce the manufacturing cost of EL display devices and electronic devices incorporating the EL display devices. The CS telephony device receives a CS-alert signal from the network for an incoming CS call and derives from the CS-alert signal that an associated PS signal is to be expected within a predetermined time interval. In comparison to non-crosslinked polysiloxy films, or crosslinked films of 1 weight % or less, the enhanced crosslinked polysiloxy films, while continuing to be soluble in the solvent, have reduced tack and reduced adhesion to skin and can act as sacrificial coatings under strongly adherent pressure sensitive adhesives. The anti-restenotic medical devices include stents, catheters, micro-particles, probes and vascular grafts. When the occurrence of the communication error of the network bus is notified from the accessory device which is adjacent, the image forming apparatus realizes the network configuration in real time and erases the identification information stored. The system makes optional use of devices designed to immobilize or track an organ during therapy.