The invention provides a control method for an integrated access device. The integrated access device comprises a network data module and a voice module. The voice module includes a voice data processing unit, a terminal voice data access unit and a network voice data access unit; and a voice module application layer controls all units included by the voice module. When voice module application layer determines that the integrated access device needs to process a voice communication service, the voice module is set to be a working state; and otherwise, the voice module is set to be an idle state. With dynamic switching of the working state of the voice module in the integrated access device, system resources of the integrated access device can be used effectively, so that the overall performance of the integrated access device can be improved and the overall power consumption can be reduced. In addition, the invention also provides an integrated access device; and an application program for determining whether a voice communication services needs to be processed and the voice module state needs to be switched isarrnaged in the voice module application layer.