Assembly and method for an airplane for transmitting an analog audio signal

A method for an airplane for transmitting an analog audio signal from an analog signal source to an analog signal sink,

• wherein the airplane contains a line designed with at least two wires, and
• the line is connectable in a second operating mode to the analog signal source and the analog signal sink for the analog audio signal, wherein the method comprises:
• operating the line in a first operating mode as a digital data bus for transmitting data and operating the line in a second operating mode as an analog signal line,
• switching the line to the second operating mode for transmitting the analog audio signal and transmitting the analog audio signal from the analog signal source via the line to the analog signal sink.

A method for an airplane for transmitting an analog audio signal from an analog signal source to an analog signal sink,

• wherein the airplane contains a line designed with at least two wires, and
• the line is connectable in a second operating mode to the analog signal source and the analog signal sink for the analog audio signal, wherein the method comprises:
• operating the line in a first operating mode as a digital data bus for transmitting data and
• operating the line in a second operating mode as an analog signal line,
• switching the line to the second operating mode for transmitting the analog audio signal and transmitting the analog audio signal from the analog signal source via the line to the analog signal sink, wherein
• the line is connected in the first operating mode to a first digital transceiver and to a second digital transceiver, wherein
• the line is supplied with power in the first operating mode at least from a normal airplane on-board power supply system, and the line, the analog signal source and the analog signal sink are supplied with power in the second operating mode at least from an emergency power supply system, and wherein
• the line is electrically connected to the analog signal source and/or to the analog signal sink in the second operating mode by means of an analog line path using a discrete switch as the first and/or second switching element, and the analog line path is electrically isolated in the first operating mode using the discrete switch.