PROCESSING APPARATUS, PROCESSING METHOD, AND COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide a processing apparatus, a processing method, and a communication system that are capable of preventing congestion from occurring, and that are capable of continuously providing a call having priority higher than that of other calls.SOLUTION: The processing apparatus includes an inquiry statistical unit that receives an input inquiry request for inquiring about a destination corresponding to a first telephone number and that counts the number of times the inquiry request is received, and a restriction control unit that, when the number of times the inquiry request is received is equal to or greater than a restriction-start threshold value, transmits, to a restriction control apparatus for performing origination restriction, a restriction request to restrict a call based on a second telephone number. The transmitted restriction request restricts a call based on the second telephone number, so that a call based on the first telephone number is performed.