| 摘要 |
PROBLEM TO BE SOLVED: To provide mobile communication terminal equipment providing improved convenience in hands-free use. SOLUTION: Switching control can be separately performed by respectively connecting control signal lines (c) and (b) from a control part 17 by respectively independently operating changeover switches 54 and 55. A mode setting control means 17b is provided and in the state of mounting an earphone/microphone 100, one of two modes of 'loudspeaker mode' and 'earphone mode' can be selectively designated. In the loudspeaker mode, changeover switches 52, 53 and 55 are switched by a switch changeover control means 17a, an earphone/ microphone jack 51 is connected to a transmitting amplifier 13 and a receiving amplifier 10 is connected to a speaker amplifier 42 respectively.
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