Abstract: A communication apparatus can perform an appropriate process in response to a job notification received from a server. The communication apparatus sets an operation mode to a first mode. The first mode is a mode to receive a job notification from a server using a connection established for server-push communication between the communication apparatus and the server. The job notification indicates whether a job to be performed by the communication apparatus is occurring. The communication apparatus disconnects the connection before completion of a first job in response to a first job notification being received from the server using the connection during the first mode. The first job notification indicates occurrence of the first job to be performed by the communication apparatus. The communication apparatus performs the first job in response to the first job notification being received from the server.

Abstract: A communication device may set an operation mode of the communication device to a first mode, the first mode being for repeatedly sending a polling signal to a specific server on the Internet so as to receive target data from the specific server. The communication device may receive a response including related information which is related to the target data from the specific server, and receive a response not including the related information from the specific server. The communication device may set the operation mode of the communication device to a second mode instead of the first mode in a case where a first predetermined condition is satisfied in a state where the operation mode of the communication device is the first mode, wherein the second mode is for receiving the target data from the specific server without sending the polling signal to the specific server.

Abstract: A communication device may determine whether the communication device is in a proxy environment or in a non-proxy environment. The communication device may set an operation mode of the communication device to a first mode in a case where it is determined that the communication device is in the proxy environment, the first mode being for repeatedly sending a polling signal to the specific server so as to receive target data from the specific server. The communication device may set the operation mode of the communication device to a second mode in a case where it is determined that the communication device is in the non-proxy environment, the second mode being for receiving the target data from the specific server without sending the polling signal to the specific server.

Abstract: A communication apparatus can perform an appropriate process in response to a job notification received from a server. The communication apparatus sets an operation mode to a first mode. The first mode is a mode to receive a job notification from a server using a connection established for server-push communication between the communication apparatus and the server. The job notification indicates whether a job to be performed by the communication apparatus is occurring. The communication apparatus disconnects the connection before completion of a first job in response to a first job notification being received from the server using the connection during the first mode. The first job notification indicates occurrence of the first job to be performed by the communication apparatus. The communication apparatus performs the first job in response to the first job notification being received from the server.

Abstract: An image processing device may be configured to: in a case where an obtainment request is received from a first terminal device, send to the first terminal device at least one piece of setting data in a memory; in a case where specific setting data is selected from among the at least one piece of setting data in the first terminal device, receive from the first terminal device an execution request including related information related to the specific setting data; execute an image processing according to one or more setting values corresponding to the related information; determine whether target setting data exists in the memory, the target setting data being setting data of which non-use period exceeds a predetermined period; and in a case where the target setting data exists, delete the target setting data from the memory.

Abstract: A communication device may set an operation mode of the communication device to a first mode, the first mode being for repeatedly sending a polling signal to a specific server on the Internet so as to receive target data from the specific server. The communication device may receive a response including related information which is related to the target data from the specific server, and receive a response not including the related information from the specific server. The communication device may set the operation mode of the communication device to a second mode instead of the first mode in a case where a first predetermined condition is satisfied in a state where the operation mode of the communication device is the first mode, wherein the second mode is for receiving the target data from the specific server without sending the polling signal to the specific server.

Abstract: A communication device may determine whether the communication device is in a proxy environment or in a non-proxy environment. The communication device may set an operation mode of the communication device to a first mode in a case where it is determined that the communication device is in the proxy environment, the first mode being for repeatedly sending a polling signal to the specific server so as to receive target data from the specific server. The communication device may set the operation mode of the communication device to a second mode in a case where it is determined that the communication device is in the non-proxy environment, the second mode being for receiving the target data from the specific server without sending the polling signal to the specific server.

Abstract: A communication device may send a first negotiation request including first version information to a first external device via a communication interface of the communication device, execute first communication with the first external device via the communication interface by using the predetermined communication protocol of a second version, send a second negotiation request including second version information to the first external device via the communication interface in a case where an error notification is received from the first external device in the first communication, and execute second communication with the first external device via the communication interface by using the predetermined communication protocol of the first version.

Abstract: An image processing device may be configured to: in a case where an obtainment request is received from a first terminal device, send to the first terminal device at least one piece of setting data in a memory; in a case where specific setting data is selected from among the at least one piece of setting data in the first terminal device, receive from the first terminal device an execution request including related information related to the specific setting data; execute an image processing according to one or more setting values corresponding to the related information; determine whether target setting data exists in the memory, the target setting data being setting data of which non-use period exceeds a predetermined period; and in a case where the target setting data exists, delete the target setting data from the memory.

Abstract: A communication device may send a first negotiation request including first version information to a first external device via a communication interface of the communication device, execute first communication with the first external device via the communication interface by using the predetermined communication protocol of the second version, send a second negotiation request including second version information to the first external device via the communication interface in a case where an error notification is received from the first external device in the first communication, and execute second communication with the first external device via the communication interface by using the predetermined communication protocol of the first version.

Abstract: A management device transmits to a target device a first GETNEXT request comprising a first group of Ma-combined IDs. Each combined ID is a combination of a target ID and one of Ma-index values. Each index value has a first value in its highest digit(s) and one of consecutive values in its lowest digit. The management device obtains Ma-partial information and a second group of an Ma-combined IDs corresponding to the Ma-partial information, identifies a greatest combined ID having a greatest index value from the second group, and transmits a second GETNEXT request comprising Mb-combined IDs comprising the identified greatest combined ID. Each combined ID is a combination of the target ID and one of Mb-index values. Each index value has a second value different from the second value in its highest digit(s) and one of consecutive values in its lowest digit.

Abstract: A management device transmits to a target device a first GETNEXT request comprising a first group of Ma-combined IDs. Each combined ID is a combination of a target ID and one of Ma-index values. Each index value has a first value in its highest digit(s) and one of consecutive values in its lowest digit. The management device obtains Ma-partial information and a second group of an Ma-combined IDs corresponding to the Ma-partial information, identifies a greatest combined ID having a greatest index value from the second group, and transmits a second GETNEXT request comprising Mb-combined IDs comprising the identified greatest combined ID. Each combined ID is a combination of the target ID and one of Mb-index values. Each index value has a second value different from the second value in its highest digit(s) and one of consecutive values in its lowest digit.

Abstract: A management device may determine, with reference to a table, whether target information to be obtained, from a target device, corresponding to a target ID is index information. The management device may transmit a first main request including Ma-combined IDs to the target device when the target information is the index information. Each of the Ma- combined IDs may be a combination of the target ID and one of Ma- consecutive index values. The management device may determine whether Ma- partial target information corresponding to the Ma- combined IDs cannot be obtained. When the Ma-partial target information cannot be obtained, the management device may transmit a sub-request to the target device. The sub-request may comprise N- combined IDs forming a subset of the Ma- combined IDs in the first main request. N may be an integer that is 1 or greater and may be smaller than Ma.

Abstract: A method to connect a wireless communication device to an intended wireless network is provided. The method includes a first step, in which options of authorization methods are presented to be selectable to a user, a second step, in which a first authorization method is automatically selected if an option of a third authorization item is selected, a third step, in which options of encryption methods corresponding to the selected first authorization method are presented to be selectable to the user, a fourth step, in which a first encryption method is automatically selected if a third encryption item is selected, and a fifth step, in which establishment of the connection is attempted by use of the selected first authorization method and the selected first encryption method.

Abstract: A wireless communication device is provided. The wireless communication device includes a first obtainer configured to obtain an identifier of a wireless network to which a first external device belongs, the identifier of the wireless network being detected based on radio waves transmitted from the first external device, a second obtainer configured to obtain an identifier of a wireless network to which a second external device belongs, the identifier of the wireless network being obtained from the second external device through an IP network to which the wireless communication device has been connected, and an output controller configured to output a first identifier obtained commonly by the first obtainer and the second obtainer to an output unit so that the first identifier is presented to be distinguishable from other identifiers obtained by solely one of the first obtainer and the second obtainer.

Abstract: A management device for managing a device has: a control unit including: a status acquiring unit that acquires a status of the device; and a notifying unit that, if the device is in a specific status, notifies information about the specific status to another device; and a first management screen supply unit supplying first management screen data to a display unit, wherein the control unit determines whether a notifying function of the notifying unit is valid or invalid, if the notifying function is valid, the control unit controls the status acquiring unit to periodically acquire the status of the device regardless of whether the first management screen supply unit starts up, and if the notifying function is invalid, the control unit controls the status acquiring unit to acquire the status of the device when the first management screen supply unit starts up in response to an instruction from a user.

Abstract: A data providing system includes a first communication apparatus and a plurality of second communication apparatuses that provide data to the first communication apparatus using a communication protocol capable of performing authentication by identification information. The first communication apparatus includes an identification information request sending section, an individual identification information receiving section, a first data request sending section, a first common identification information storage section, a second data request sending section, and a data receiving section. At least one of the second communication apparatuses includes an individual identification information storage section, a second common identification information storage section, an identification information request receiving section, an individual identification information sending section, a data request receiving section, a first data sending section and a second data sending section.

Abstract: A management device for managing a device has: a control unit including: a status acquiring unit that acquires a status of the device; and a notifying unit that, if the device is in a specific status, notifies information about the specific status to another device; and a first management screen supply unit supplying first management screen data to a display unit, wherein the control unit determines whether a notifying function of the notifying unit is valid or invalid, if the notifying function is valid, the control unit controls the status acquiring unit to periodically acquire the status of the device regardless of whether the first management screen supply unit starts up, and if the notifying function is invalid, the control unit controls the status acquiring unit to acquire the status of the device when the first management screen supply unit starts up in response to an instruction from a user.

Abstract: A wireless communication device is provided. The wireless communication device includes a first obtainer configured to obtain an identifier of a wireless network to which a first external device belongs, the identifier of the wireless network being detected based on radio waves transmitted from the first external device, a second obtainer configured to obtain an identifier of a wireless network to which a second external device belongs, the identifier of the wireless network being obtained from the second external device through an IP network to which the wireless communication device has been connected, and an output controller configured to output a first identifier obtained commonly by the first obtainer and the second obtainer to an output unit so that the first identifier is presented to be distinguishable from other identifiers obtained by solely one of the first obtainer and the second obtainer.

Abstract: A method to connect a wireless communication device to an intended wireless network is provided. The method includes a first step, in which options of authorization methods are presented to be selectable to a user, a second step, in which a first authorization method is automatically selected if an option of a third authorization item is selected, a third step, in which options of encryption methods corresponding to the selected first authorization method are presented to be selectable to the user, a fourth step, in which a first encryption method is automatically selected if a third encryption item is selected, and a fifth step, in which establishment of the connection is attempted by use of the selected first authorization method and the selected first encryption method.