How do hotel rooms address each other?

Look at your room number. Does it have anything to do with the phone number? Generally, hotels use internal lines and can only make internal calls. For example, in Room 8 on the fifth floor, the telephone number may be set like this. For example, 68508, 68 is set by the hotel, 5 is the floor, and 08 is the room number. According to this meaning, you will know the other party's room number, so call directly.