| 摘要 |
Healthcare industry pillow speaker cables and interfaces are disclosed. Pillow speaker cables communicatively couple a pillow speaker to another device. Pillow speaker cables comprise four wires. The first wire and the second wire comprise a data bus for communicating data to and from the pillow speaker. The third wire and the fourth wire comprise an audio line and an audio return line for transmitting audio information to and from a speaker in the pillow speaker.
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