Is it possible to make almost unlimited calls in ordinary hotels?

Don't worry, many hotels have this service, because their telephone system is a package agreed with the operator. For example, the telephone system of the whole hotel is composed of 12 trunk lines, and each trunk line has a monthly package for 300 yuan, so the hotel only needs to pay the operator 12 times the 300 yuan every month, no matter the call duration of each room or hotel, it is free, as long as you can make unlimited calls in the package.