There are hotel interface devices (hotel interface software, 4-way voice card) for telephone program-controlled exchange data in the hotel. What does the hotel interface mean?

Hotel interface: in fact, it is to connect the hotel server and the hotel software;

Function: When checking in for guests through hotel software, the telephone exchange will automatically change the extension level of the room; When you check out, the level will automatically drop to the lowest. In addition, four-star hotels are required to have suite functions, mini bars and other functions, and telephone exchanges are connected to the broadcasting system for emergency use. Hotel software now also provides multinational voice prompts and messages, and also needs hotel interface. 4-way voice card (this function can also be realized, but the language and function are limited) is enough for general hotels.