Patent ID: 8791819
Filing Date: 2014-07-29
Classification: G08B,H04M

Abstract:
1. An intercom exchange comprising: a plurality of communication paths including a preferentially allocated communication path, and the preferentially allocated communication path configured to receive an external sound; each of the plurality of communication paths including a DSP (Digital Signal Processor) and each of the plurality of communication paths is configured to input and output audio data; the DSP of the preferentially allocated communication path is configured to determine if the external sound is an abnormal sound and output a notification signal when the external sound is the abnormal sound; a switch circuit connected to each of the plurality of communication path, and the switch circuit is configured to switch connections between the plurality of communication paths; a communication path control unit configured to: a memory configured to store an allocation table including information indicating an allocation state of the preferentially allocated communication path, wherein the communication path control unit references the allocation table stored in the memory, and controls the switch circuit to connect the DSP of the preferentially allocated communication path according to the allocation table.