A method is provided for a redundant port system in which any port in a packet-forwarding device can be designated as a redundant port for any other port. When a specific signal is supplied from the keyboard unit, a power supply startup signal is supplied from the power supply startup unit to the main power unit to enable the main power unit to be started up. If accepted the VoIP call is established. 00\xd7103 ; and c) a G\u2032 versus 12 relationship: G\u2032>C+D, where C=127. The cam pin is arranged to be superimposed on a plane of rotation of the gear member, and the vehicle latch device further includes a cover member that is attached to the holding member and covers at least the support shaft, the input unit, the electric actuator, and the gear member.