Abstract: A communication system comprising: a communication device; a server; and a terminal device. The communication device sends first history information indicating usage history of the communication device to the server and sends second history information indicating usage history of the communication device to the terminal device. In a case where the first history information is received from the communication device, the server sends first notification information related to the first history information to the terminal device. In a case where the first notification information is received from the server, the terminal device displays the first notification information on the display unit and in a case where the second history information is received from the communication device, the terminal device displays second notification information related to the second history information on the display unit.

Abstract: This specification discloses a non-transitory computer-readable storage medium storing a set of program instructions for a computer configured to manage rental printers. The computer includes a controller and a memory. The set of program instructions, when executed by the controller, causes the computer to perform: referring to history information indicating a printer use history of each of a plurality of users; and determining, for a part of a target printer to be rented to a target user, whether the part satisfies a replacement condition by using the history information and a scheduled rental period. The scheduled rental period is a rental period during which the target printer is scheduled to be rented. The replacement condition indicates that the part should be replaced before the target printer is rented to the target user.

Abstract: A communication system comprising: a communication device; a server; and a terminal device. The communication device sends first history information indicating usage history of the communication device to the server and sends second history information indicating usage history of the communication device to the terminal device. In a case where the first history information is received from the communication device, the server sends first notification information related to the first history information to the terminal device. In a case where the first notification information is received from the server, the terminal device displays the first notification information on the display unit and in a case where the second history information is received from the communication device, the terminal device displays second notification information related to the second history information on the display unit.

Abstract: This specification discloses a non-transitory computer-readable storage medium storing a set of program instructions for a computer configured to manage rental printers. The computer includes a controller and a memory. The set of program instructions, when executed by the controller, causes the computer to perform: referring to history information indicating a printer use history of each of a plurality of users; and determining, for a part of a target printer to be rented to a target user, whether the part satisfies a replacement condition by using the history information and a scheduled rental period. The scheduled rental period is a rental period during which the target printer is scheduled to be rented. The replacement condition indicates that the part should be replaced before the target printer is rented to the target user.

Abstract: A program for a teleconference causes, when executed, a server apparatus to perform operations including: a first receiving operation of receiving a first notification, through a communicator of the server apparatus connected to a network, from a first terminal apparatus out of a plurality of terminal apparatuses, a first authority being set to the first terminal apparatus, the first authority being one of authorities that are preliminarily set in the teleconference; a first determining operation of determining a transmission destination of the first notification received by the first receiving operation based on conference mode information related to a total number of the plurality of terminal apparatuses connecting to the teleconference, the transmission destination being at least one of the plurality of terminal apparatuses; and a first transmitting operation of transmitting the first notification from the communicator to the transmission destination determined by the first determining operation.

Abstract: An image display apparatus acquires other-party device history information that associates other-party device information with call history information that is records of calls, the other-party device information being related to devices of other parties that have talked with a user of the image display apparatus on the phone through a telephone device. Further, the image display apparatus selects the other-party device information about devices of other parties that talked with the user on the phone a predetermined period of time ago or earlier, by referring to the other-party device history information thus acquired. Furthermore, the image display apparatus acquires image information related to the other-party device information thus selected, and causes an image according to the image information thus acquired, to be displayed.