How to answer, hang up, and reject calls on the Xiaomi Desktop Speaker?

For your reference, the operations of calls in different channels are as follows:
1. In the Bluetooth channel and USB channel, when connected to a phone and there is an incoming call, use the Multi-function Button to answer, hang up, and reject calls. Press to answer, press and hold for 2 seconds to reject, and press during a call to hang up. When connected to a computer, these functions aren't available via the Multi-function Button. For direct calls through the speaker, you need to set both the computer's input and output to the Xiaomi Desktop Speaker;
2. In the AUX IN channel, you cannot use the Multi-function Button to answer, end, or reject calls, whether connecting to a phone or a computer. Actions must be performed on the audio source device.