A communication system for communicating a plurality of audio signals between a plurality of control devices (10, 10A, 10B, 10C, 10D), wherein the plurality of control devices comprises at least a subsequent control device and at least a preceding control device, wherein each control device of the plurality of control devices comprises; - an audio port (4, 4A, 4B) configured to receive a local voice signal of a user of the control device, wherein the local voice signal is extended into a first local voice signal and a second local voice signal, - a primary audio input port configured to receive a first audio signal of the plurality of audio signals transmitted by the subsequent control device, wherein the first audio signal comprises a second voice signal of a second user of the subsequent control device, - a secondary audio input port configured to receive a second audio signal of the plurality of audio signals transmitted by the preceding control device, wherein the second audio signal comprises a third voice signal of a third user of the preceding control device, - a primary audio output port configured to transmit a third audio signal of the plurality of audio signals comprising the first local voice signal and the second audio signal to the subsequent control device, - a secondary audio output port configured to transmit a fourth audio signal of the plurality of audio signals comprising the second local voice signal and the first audio signal to the preceding control device, and - an internal audio mixer configured to mix the first audio signal and the second audio signal into an internal audio signal, and wherein the primary audio input port and the primary audio output port of the control device (10, 10A, 10B, 10C, 10D) are coupled to the secondary audio output port and the secondary audio input port of the subsequent control device, respectively, and wherein the secondary audio input port and the secondary audio output port of the control device are coupled to the primary audio output port and the primary audio input port of the preceding control device, respectively, and wherein the control device comprises a first volume controller configured to control the sound level of the first local voice signal and the second local voice signal and a second volume controller configured to control the sound level of the internal audio signal and transmit the internal audio signal to the audio port (4, 4A, 4B). - an audio port (4, 4A, 4B) configured to receive a local voice signal of a user of the control device, wherein the local voice signal is extended into a first local voice signal and a second local voice signal, - a primary audio input port configured to receive a first audio signal of the plurality of audio signals transmitted by the subsequent control device, wherein the first audio signal comprises a second voice signal of a second user of the subsequent control device, - a secondary audio input port configured to receive a second audio signal of the plurality of audio signals transmitted by the preceding control device, wherein the second audio signal comprises a third voice signal of a third user of the preceding control device, - a primary audio output port configured to transmit a third audio signal of the plurality of audio signals comprising the first local voice signal and the second audio signal to the subsequent control device, - a secondary audio output port configured to transmit a fourth audio signal of the plurality of audio signals comprising the second local voice signal and the first audio signal to the preceding control device, and - an internal audio mixer configured to mix the first audio signal and the second audio signal into an internal audio signal, and