How will others make a phone call after setting the Do Not Disturb mode?

The other party will hear a busy signal or receive a text message reply.

When the mobile phone is set to Do Not Disturb mode, the other party will hear a busy tone when calling, telling them that it is not convenient to answer the phone now. If the automatic reply function is turned on in the settings, the other party will also receive a text message to reply that he is busy and can't answer the phone.