Patent ID: 9219814
Filing Date: 2015-12-22
Classification: H04M

Abstract:
1. A communication apparatus, which comprises a connection unit that an external telephone is connected to, a switching unit that switches between a connection state in which the external telephone is connected to a line and a disconnection state in which the external telephone is disconnected from the line, a detection unit that detects an off-hook state of the external telephone, and a network control unit that is connected to the line in parallel to the external telephone, and controls a capture state of the line, the apparatus comprising: a capture control unit that captures, when the detection unit detects the off-hook state of the external telephone in the disconnection state, the line using a line capture unit, an impedance of a side of the line capture unit being lower than the external telephone side, the line capture unit being included in the network control unit; a connection control unit that connects the external telephone to the line by switching the switching unit to the connection state after the line capture unit captures the line; and a line release unit that releases the line captured by the line capture unit after the external telephone is connected to the line.