The purpose of AUX interface:
Aux, the abbreviation of "auxiliary", is an additional signal line design. In general audio equipment, in addition to the regular input and output terminals, there are often several input and output terminals marked "Aux".
The I/O terminal marked "Aux" is used as a spare connection terminal, which can be used for special applications, such as extra sound output or input. This kind of preparatory terminal or line, regardless of input and output, is collectively called Aux.
The role of AUX interface in the field of network communication
AUX port is an asynchronous port, which is mainly used for remote configuration, dial-up connection and connection with modem through transceiver. Support hardware flow control. Auxiliary ports and console ports are usually placed together because their respective configuration environments are different.
AUX interface establishes command line connection between users and devices; Perform some operations on the device that cannot be completed in user mode, such as initialization, restoring initial configuration, correcting abnormal user mode, etc. The fixed port of the device can be used as an ordinary asynchronous serial port, and the highest speed is115200 bit/s.
Using AUX interface, remote configuration of hardware products, line backup and other functions can be realized.