An integrated access system, comprising: a first BBU, a remote CPRI data exchange unit, a first radio frequency card RFC single board, a repeater network management object function module, and a basestation network management sub-system, the first RFC single board being inserted into a slot of the first BBU, and the repeater network management object function module being arranged in the base station network management sub-system; the first BBU is connected to the remote CPRI data exchange unit by means of a first CPRI channel, and the first BBU is connected to the base station management sub-system by means of an OM channel; the first RFC single board comprises: a digital up and down frequency conversion module, a digital combiner and splitter module, and a CPRI compression and decompression module, the digital and frequency conversion module being connected to the digital combiner and splitter module, and the digital combiner and splitter module being connected to the CPRI compression and decompression module; and the first BBU comprises: a CPRI mapping and de-mapping module, the CPRI mapping and de-mapping module being connected to the CPRI compression and decompression module.