| 摘要 |
PURPOSE:To remarkably miniaturize and lighten the telephone set body by setting a transmitting output of the telephone set body as small as possible, and using the telephone set body by installing it to an external adaptor provided with a function for amplifying its transmitting output, in the case of an area in which the installation density of a base station is low. CONSTITUTION:In the case of using the telephone set in an area in which the installation density of a base station is low, such as the suburbs, etc., by carrying a telephone set body 51 by installing it to an external adaptor 52, a call is executed by a sufficient transmitting output. On the other hand, in the case it is used in an area in which the installation density of the base station is high, and a call can be executed enough even by a small transmitting output, such as a city area, etc., the telephone set body 51 is removed from the external adaptor 52, and only the telephone set body 51 is put into a pocket, etc., and carried. |
