| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily adjust the volume of incoming call sound depending on the surrounding environment. <P>SOLUTION: A communication device capable of communicating with an external communication device via a communication line comprises: a microphone part capable of inputting at least voice; and a speaker part capable of outputting the incoming call sound based on an incoming call from at least the external communication device. The communication device controls the volume of incoming call sound output from the speaker part to be equal to or lower than a second predetermined value if the volume input to the microphone part is determined to be equal to or lower than a first predetermined value under the condition that the incoming call from the external communication device has been detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
