To utilize a time for awaiting its own turn by allowing a user to recognize its own turn even at other place in the case of awaiting its own turn in a line by a pager and a mobile communication unit such as a mobile or a telephone set.

After any (107 in this embodiment) of patient's registration card readers 107-111 reads specific data of a patient's registration card 112 on which the specific data are stored, a waiting line management calling controller 104 displays a waiting time of patients possessing the patient's registration card 112 on the patient's registration card reader (e.g. 107), and a user confirming the displayed line wait time registers a calling time at which the user can receive a calling before its own turn comes around and a telephone number of a mobile phone 113 or a pager 114 possessed by the user by using a key entry device 106. The waiting line management calling controller 104 makes a call to the mobile phone 113 or the page 114 via a stationary network 101 at the registered call time.