The present invention provides a carbon heating element having an arbitrary specific resistance and an arbitrary shape which are arbitrary necessary as a heating element, and a method of producing the same. In particular, the user equipment is in communication with respective serving transceiver stations, and exchanging includes sending from the serving transceiver stations to the interfered transceiver stations information concerning interference from user equipment served by the serving transceiver stations and interfering with the interfered transceiver stations. A suppress algorithm switching control section controls switching on the basis of information from a coding algorithm switching control section such that an optimal one of the noise suppress sections may function in association with the coding section activated in the speech coder. One or more at least generally coplanar lenses have at least generally parallel optical axes each being aligned with one of the elements and being positioned opposite from the base with respect to the elements.