About hotel telephone exchanges: For example, newly renovated hotels need to install 2 telephone exchanges and 50 extensions.

This is so simple, just buy one with PC function. Generally, first know how many outside lines there are in the hotel, and then determine how many outside lines and extensions to buy. Fifty extensions, then you can choose eight external lines and the switch with extension 56 first. After installation, you can find out the original extension number corresponding to each room, copy it down, and then modify the extension number through computer programming to make the number of each room correspond to the house number. Second, set the switchboard, and the incoming call is set to ring at the front desk. Third, set the extension level, that is, whether the room phone can make an outside call.