| 摘要 |
In order to mount a plurality of kinds of earphone microphones, a mobile phone includes an earphone microphone terminal to accept either a plug of a PTT earphone microphone or a plug of an earphone microphone, and an earphone microphone switching portion to detect whether the PTT earphone microphone or the earphone microphone is accepted and switch a contact point between a plurality of contact points of the earphone microphone terminal depending on the kind of the detected earphone microphone.
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