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In telecommunications, Bearer Service or data service is a service that allows transmission of information signals between network interfaces. These services give the subscriber the capacity required to transmit appropriate signals between certain access points, i.e. user network interfaces. The bearer services include the following: #Rate adapted sub-rate information like circuit switched asynchronous and synchronous duplex data, 300-9600 bits. #Speech and data swapping during a call, i.e. alternate speech and data. #Modem selection, i.e. selection of 3.1 kHz audio service when inter-working with ISDN. HELoo Mamoo 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bearer service」の詳細全文を読む スポンサード リンク
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